./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem12.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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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 bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:04:29,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:04:29,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:04:29,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:04:29,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:04:29,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:04:29,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:04:29,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:04:29,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:04:29,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:04:29,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:04:29,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:04:29,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:04:29,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:04:29,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:04:29,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:04:29,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:04:29,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:04:29,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:04:29,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:04:29,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:04:29,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:04:29,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:04:29,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:04:29,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:04:29,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:04:29,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:04:29,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:04:29,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:04:29,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:04:29,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:04:29,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:04:29,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:04:29,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:04:29,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:04:29,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:04:29,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:04:29,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:04:29,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:04:29,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:04:29,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:04:29,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:04:29,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:04:29,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:04:29,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:04:29,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:04:29,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:04:29,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:04:29,708 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:04:29,708 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:04:29,708 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:04:29,708 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:04:29,709 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:04:29,709 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:04:29,709 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:04:29,709 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:04:29,710 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:04:29,710 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:04:29,710 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:04:29,710 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:04:29,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:04:29,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:04:29,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:04:29,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:04:29,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:04:29,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:04:29,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:04:29,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:04:29,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:04:29,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:04:29,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:04:29,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:04:29,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:04:29,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:04:29,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:29,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:04:29,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:04:29,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:04:29,715 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:04:29,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:04:29,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:04:29,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:04:29,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:04:29,717 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 [2021-11-23 17:04:29,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:04:30,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:04:30,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:04:30,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:04:30,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:04:30,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-23 17:04:30,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/2f1cacba6/07b1244a520f4fe4b610e7f8590a12ab/FLAG46f8c8e8f [2021-11-23 17:04:31,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:04:31,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-23 17:04:31,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/2f1cacba6/07b1244a520f4fe4b610e7f8590a12ab/FLAG46f8c8e8f [2021-11-23 17:04:31,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/2f1cacba6/07b1244a520f4fe4b610e7f8590a12ab [2021-11-23 17:04:31,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:04:31,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:04:31,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:31,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:04:31,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:04:31,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:31" (1/1) ... [2021-11-23 17:04:31,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd4a0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:31, skipping insertion in model container [2021-11-23 17:04:31,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:04:31" (1/1) ... [2021-11-23 17:04:31,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:04:31,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:04:32,008 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-23 17:04:32,025 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-23 17:04:35,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:35,736 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:04:35,753 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-23 17:04:35,753 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-23 17:04:37,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:04:37,385 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:04:37,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37 WrapperNode [2021-11-23 17:04:37,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:04:37,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:37,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:04:37,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:04:37,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:37,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:40,052 INFO L137 Inliner]: procedures = 350, calls = 5526, calls flagged for inlining = 234, calls inlined = 234, statements flattened = 44087 [2021-11-23 17:04:40,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:04:40,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:04:40,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:04:40,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:04:40,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:40,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:40,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:40,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:42,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:42,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:42,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:42,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:04:42,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:04:42,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:04:42,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:04:42,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:04:37" (1/1) ... [2021-11-23 17:04:42,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:04:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:04:42,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:04:42,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:04:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:04:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:04:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2021-11-23 17:04:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2021-11-23 17:04:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2021-11-23 17:04:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2021-11-23 17:04:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:04:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:04:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:04:44,393 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:04:44,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:07:34,585 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:07:34,734 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 17:07:34,742 INFO L158 Benchmark]: Toolchain (without parser) took 183192.43ms. Allocated memory was 104.9MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 46.4MB in the beginning and 5.2GB in the end (delta: -5.2GB). Peak memory consumption was 788.2MB. Max. memory is 16.1GB. [2021-11-23 17:07:34,743 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:07:34,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5834.29ms. Allocated memory was 104.9MB in the beginning and 408.9MB in the end (delta: 304.1MB). Free memory was 46.1MB in the beginning and 262.5MB in the end (delta: -216.3MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. [2021-11-23 17:07:34,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 2665.58ms. Allocated memory was 408.9MB in the beginning and 1.1GB in the end (delta: 692.1MB). Free memory was 262.5MB in the beginning and 777.3MB in the end (delta: -514.9MB). Peak memory consumption was 251.7MB. Max. memory is 16.1GB. [2021-11-23 17:07:34,751 INFO L158 Benchmark]: Boogie Preprocessor took 2828.05ms. Allocated memory was 1.1GB in the beginning and 3.0GB in the end (delta: 1.9GB). Free memory was 777.3MB in the beginning and 2.6GB in the end (delta: -1.8GB). Peak memory consumption was 199.2MB. Max. memory is 16.1GB. [2021-11-23 17:07:34,753 INFO L158 Benchmark]: RCFGBuilder took 171852.96ms. Allocated memory was 3.0GB in the beginning and 6.0GB in the end (delta: 3.0GB). Free memory was 2.6GB in the beginning and 5.2GB in the end (delta: -2.6GB). Peak memory consumption was 395.3MB. Max. memory is 16.1GB. [2021-11-23 17:07:34,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5834.29ms. Allocated memory was 104.9MB in the beginning and 408.9MB in the end (delta: 304.1MB). Free memory was 46.1MB in the beginning and 262.5MB in the end (delta: -216.3MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 2665.58ms. Allocated memory was 408.9MB in the beginning and 1.1GB in the end (delta: 692.1MB). Free memory was 262.5MB in the beginning and 777.3MB in the end (delta: -514.9MB). Peak memory consumption was 251.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 2828.05ms. Allocated memory was 1.1GB in the beginning and 3.0GB in the end (delta: 1.9GB). Free memory was 777.3MB in the beginning and 2.6GB in the end (delta: -1.8GB). Peak memory consumption was 199.2MB. Max. memory is 16.1GB. * RCFGBuilder took 171852.96ms. Allocated memory was 3.0GB in the beginning and 6.0GB in the end (delta: 3.0GB). Free memory was 2.6GB in the beginning and 5.2GB in the end (delta: -2.6GB). Peak memory consumption was 395.3MB. 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 17:07:34,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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 bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:07:37,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:07:37,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:07:37,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:07:37,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:07:37,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:07:37,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:07:37,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:07:37,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:07:37,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:07:37,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:07:37,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:07:37,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:07:37,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:07:37,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:07:37,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:07:37,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:07:37,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:07:37,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:07:37,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:07:37,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:07:37,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:07:37,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:07:37,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:07:37,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:07:37,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:07:37,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:07:37,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:07:37,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:07:37,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:07:37,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:07:37,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:07:37,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:07:37,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:07:37,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:07:37,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:07:37,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:07:37,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:07:37,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:07:37,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:07:37,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:07:37,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:07:37,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:07:37,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:07:37,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:07:37,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:07:37,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:07:37,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:07:37,692 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:07:37,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:07:37,693 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:07:37,693 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:07:37,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:07:37,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:07:37,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:07:37,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:07:37,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:07:37,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:07:37,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:07:37,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:07:37,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:07:37,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:07:37,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:07:37,696 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:07:37,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:07:37,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:07:37,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:07:37,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:07:37,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:07:37,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:07:37,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:07:37,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:37,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:07:37,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:07:37,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:07:37,699 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:07:37,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:37,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:07:37,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:07:37,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:07:37,700 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 [2021-11-23 17:07:38,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:07:38,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:07:38,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:07:38,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:07:38,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:07:38,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-23 17:07:38,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/9efa774e7/1ff2c2cd83014df99f7cd6dee8d2f6dd/FLAGec981adc2 [2021-11-23 17:07:39,603 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:07:39,604 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-23 17:07:39,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/9efa774e7/1ff2c2cd83014df99f7cd6dee8d2f6dd/FLAGec981adc2 [2021-11-23 17:07:39,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/data/9efa774e7/1ff2c2cd83014df99f7cd6dee8d2f6dd [2021-11-23 17:07:39,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:07:39,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:07:39,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:39,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:07:39,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:07:39,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:39" (1/1) ... [2021-11-23 17:07:39,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61bffdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:39, skipping insertion in model container [2021-11-23 17:07:39,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:39" (1/1) ... [2021-11-23 17:07:39,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:07:40,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:07:40,417 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-23 17:07:40,432 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-23 17:07:44,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:44,824 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:07:44,840 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-23 17:07:44,841 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_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-23 17:07:46,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:46,304 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:07:46,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46 WrapperNode [2021-11-23 17:07:46,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:46,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:46,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:07:46,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:07:46,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:46,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:48,264 INFO L137 Inliner]: procedures = 353, calls = 5526, calls flagged for inlining = 234, calls inlined = 234, statements flattened = 44086 [2021-11-23 17:07:48,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:48,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:07:48,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:07:48,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:07:48,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:48,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:48,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:48,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:49,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:49,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:49,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:49,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:07:49,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:07:49,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:07:49,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:07:49,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (1/1) ... [2021-11-23 17:07:49,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:07:49,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:07:49,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:07:49,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 17:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2021-11-23 17:07:49,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2021-11-23 17:07:49,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2021-11-23 17:07:49,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2021-11-23 17:07:49,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:07:49,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:07:51,828 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:07:51,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:57,380 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:10:57,476 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:10:57,476 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:10:57,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:57 BoogieIcfgContainer [2021-11-23 17:10:57,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:10:57,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:10:57,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:10:57,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:10:57,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:07:39" (1/3) ... [2021-11-23 17:10:57,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8da1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:57, skipping insertion in model container [2021-11-23 17:10:57,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:46" (2/3) ... [2021-11-23 17:10:57,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8da1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:10:57, skipping insertion in model container [2021-11-23 17:10:57,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:10:57" (3/3) ... [2021-11-23 17:10:57,501 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12.c [2021-11-23 17:10:57,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:10:57,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:10:57,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:10:57,631 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 17:10:57,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:10:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 9453 states, 9348 states have (on average 1.5505990586221652) internal successors, (14495), 9350 states have internal predecessors, (14495), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-23 17:10:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 17:10:57,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:10:57,849 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] [2021-11-23 17:10:57,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:10:57,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:10:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash -104227597, now seen corresponding path program 1 times [2021-11-23 17:10:57,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:10:57,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473381490] [2021-11-23 17:10:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:10:57,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:10:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:10:57,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:10:57,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:10:59,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:10:59,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:10:59,389 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 17:10:59,394 INFO L158 Benchmark]: Toolchain (without parser) took 199611.33ms. Allocated memory was 83.9MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 42.5MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 584.5MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,395 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:59,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6521.59ms. Allocated memory was 83.9MB in the beginning and 245.4MB in the end (delta: 161.5MB). Free memory was 42.1MB in the beginning and 119.0MB in the end (delta: -76.9MB). Peak memory consumption was 136.2MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 1957.89ms. Allocated memory was 245.4MB in the beginning and 494.9MB in the end (delta: 249.6MB). Free memory was 119.0MB in the beginning and 288.7MB in the end (delta: -169.7MB). Peak memory consumption was 85.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,408 INFO L158 Benchmark]: Boogie Preprocessor took 1444.84ms. Allocated memory was 494.9MB in the beginning and 1.4GB in the end (delta: 935.3MB). Free memory was 288.7MB in the beginning and 1.1GB in the end (delta: -853.5MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,409 INFO L158 Benchmark]: RCFGBuilder took 187779.33ms. Allocated memory was 1.4GB in the beginning and 3.9GB in the end (delta: 2.4GB). Free memory was 1.1GB in the beginning and 3.3GB in the end (delta: -2.2GB). Peak memory consumption was 497.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,411 INFO L158 Benchmark]: TraceAbstraction took 1898.83ms. Allocated memory is still 3.9GB. Free memory was 3.3GB in the beginning and 3.2GB in the end (delta: 108.0MB). Peak memory consumption was 107.0MB. Max. memory is 16.1GB. [2021-11-23 17:10:59,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 75.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 6521.59ms. Allocated memory was 83.9MB in the beginning and 245.4MB in the end (delta: 161.5MB). Free memory was 42.1MB in the beginning and 119.0MB in the end (delta: -76.9MB). Peak memory consumption was 136.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1957.89ms. Allocated memory was 245.4MB in the beginning and 494.9MB in the end (delta: 249.6MB). Free memory was 119.0MB in the beginning and 288.7MB in the end (delta: -169.7MB). Peak memory consumption was 85.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1444.84ms. Allocated memory was 494.9MB in the beginning and 1.4GB in the end (delta: 935.3MB). Free memory was 288.7MB in the beginning and 1.1GB in the end (delta: -853.5MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. * RCFGBuilder took 187779.33ms. Allocated memory was 1.4GB in the beginning and 3.9GB in the end (delta: 2.4GB). Free memory was 1.1GB in the beginning and 3.3GB in the end (delta: -2.2GB). Peak memory consumption was 497.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1898.83ms. Allocated memory is still 3.9GB. Free memory was 3.3GB in the beginning and 3.2GB in the end (delta: 108.0MB). Peak memory consumption was 107.0MB. 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 17:10:59,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f984d7fe-3a81-4d8f-87d0-d77d4ef77358/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