./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:47:28,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:47:28,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:47:28,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:47:28,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:47:28,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:47:28,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:47:28,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:47:28,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:47:28,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:47:28,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:47:28,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:47:28,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:47:28,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:47:28,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:47:28,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:47:28,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:47:28,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:47:28,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:47:28,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:47:28,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:47:28,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:47:28,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:47:28,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:47:28,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:47:28,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:47:28,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:47:28,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:47:28,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:47:28,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:47:28,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:47:28,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:47:28,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:47:28,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:47:28,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:47:28,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:47:28,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:47:28,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:47:28,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:47:28,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:47:28,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:47:28,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:47:28,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:47:28,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:47:28,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:47:28,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:47:28,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:47:28,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:47:28,661 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:47:28,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:47:28,662 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:47:28,662 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:47:28,663 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:47:28,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:47:28,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:47:28,664 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:47:28,664 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:47:28,664 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:47:28,665 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:47:28,665 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:47:28,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:47:28,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:47:28,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:47:28,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:47:28,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:47:28,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:47:28,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:47:28,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:47:28,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:47:28,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:47:28,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:47:28,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:47:28,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:47:28,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:47:28,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:28,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:47:28,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:47:28,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:47:28,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:47:28,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:47:28,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:47:28,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:47:28,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:47:28,673 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 [2021-11-23 16:47:28,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:47:28,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:47:28,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:47:28,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:47:28,941 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:47:28,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2021-11-23 16:47:29,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/4da779c91/ba6c05e75ebc4dbd97fffd5f40684716/FLAG158203514 [2021-11-23 16:47:29,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:47:29,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2021-11-23 16:47:29,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/4da779c91/ba6c05e75ebc4dbd97fffd5f40684716/FLAG158203514 [2021-11-23 16:47:29,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/4da779c91/ba6c05e75ebc4dbd97fffd5f40684716 [2021-11-23 16:47:29,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:47:29,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:47:29,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:29,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:47:29,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:47:29,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:29" (1/1) ... [2021-11-23 16:47:29,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb555d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:29, skipping insertion in model container [2021-11-23 16:47:29,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:29" (1/1) ... [2021-11-23 16:47:29,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:47:30,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:47:30,203 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2021-11-23 16:47:30,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:30,434 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:47:30,448 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2021-11-23 16:47:30,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:30,536 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:47:30,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30 WrapperNode [2021-11-23 16:47:30,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:30,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:30,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:47:30,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:47:30,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,637 INFO L137 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 800 [2021-11-23 16:47:30,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:30,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:47:30,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:47:30,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:47:30,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:47:30,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:47:30,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:47:30,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:47:30,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:30" (1/1) ... [2021-11-23 16:47:30,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:30,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:47:30,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:47:30,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:47:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:47:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 16:47:30,835 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 16:47:30,835 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:47:30,835 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:47:30,835 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 16:47:30,835 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 16:47:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 16:47:30,836 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 16:47:30,836 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 16:47:30,837 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 16:47:30,837 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 16:47:30,837 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 16:47:30,837 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 16:47:30,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 16:47:30,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:47:30,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:47:30,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:47:31,014 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:47:31,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:47:31,747 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:47:31,875 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 16:47:31,898 INFO L158 Benchmark]: Toolchain (without parser) took 1949.58ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 68.5MB in the beginning and 97.2MB in the end (delta: -28.7MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2021-11-23 16:47:31,899 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:47:31,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.29ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 68.2MB in the beginning and 91.2MB in the end (delta: -23.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:47:31,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.11ms. Allocated memory is still 125.8MB. Free memory was 91.2MB in the beginning and 87.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:47:31,902 INFO L158 Benchmark]: Boogie Preprocessor took 76.49ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 83.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:47:31,903 INFO L158 Benchmark]: RCFGBuilder took 1164.96ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 97.2MB in the end (delta: -13.7MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2021-11-23 16:47:31,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.29ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 68.2MB in the beginning and 91.2MB in the end (delta: -23.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.11ms. Allocated memory is still 125.8MB. Free memory was 91.2MB in the beginning and 87.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.49ms. Allocated memory is still 125.8MB. Free memory was 87.0MB in the beginning and 83.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1164.96ms. Allocated memory is still 125.8MB. Free memory was 83.5MB in the beginning and 97.2MB in the end (delta: -13.7MB). Peak memory consumption was 50.0MB. 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 16:47:31,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:47:34,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:47:34,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:47:34,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:47:34,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:47:34,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:47:34,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:47:34,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:47:34,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:47:34,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:47:34,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:47:34,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:47:34,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:47:34,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:47:34,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:47:34,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:47:34,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:47:34,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:47:34,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:47:34,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:47:34,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:47:34,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:47:34,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:47:34,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:47:34,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:47:34,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:47:34,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:47:34,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:47:34,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:47:34,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:47:34,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:47:34,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:47:34,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:47:34,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:47:34,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:47:34,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:47:34,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:47:34,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:47:34,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:47:34,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:47:34,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:47:34,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:47:34,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:47:34,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:47:34,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:47:34,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:47:34,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:47:34,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:47:34,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:47:34,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:47:34,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:47:34,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:47:34,573 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:47:34,573 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:47:34,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:47:34,574 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:47:34,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:47:34,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:47:34,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:47:34,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:47:34,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:47:34,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:47:34,576 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:47:34,576 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:47:34,576 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:47:34,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:47:34,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:47:34,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:47:34,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:47:34,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:47:34,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:47:34,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:34,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:47:34,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:47:34,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:47:34,579 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:47:34,579 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:47:34,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:47:34,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:47:34,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:47:34,580 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 [2021-11-23 16:47:34,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:47:34,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:47:34,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:47:34,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:47:34,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:47:34,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2021-11-23 16:47:35,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/d576f99f6/3c26ea28963949beb7b1b4e3181e3825/FLAGfe2839ab6 [2021-11-23 16:47:35,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:47:35,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2021-11-23 16:47:35,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/d576f99f6/3c26ea28963949beb7b1b4e3181e3825/FLAGfe2839ab6 [2021-11-23 16:47:35,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/data/d576f99f6/3c26ea28963949beb7b1b4e3181e3825 [2021-11-23 16:47:35,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:47:35,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:47:35,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:35,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:47:35,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:47:35,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:35" (1/1) ... [2021-11-23 16:47:35,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddf3de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:35, skipping insertion in model container [2021-11-23 16:47:35,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:35" (1/1) ... [2021-11-23 16:47:35,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:47:36,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:47:36,177 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2021-11-23 16:47:36,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:36,491 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:47:36,504 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_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2021-11-23 16:47:36,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:36,614 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:47:36,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36 WrapperNode [2021-11-23 16:47:36,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:36,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:36,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:47:36,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:47:36,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,681 INFO L137 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 770 [2021-11-23 16:47:36,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:36,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:47:36,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:47:36,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:47:36,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:47:36,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:47:36,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:47:36,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:47:36,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (1/1) ... [2021-11-23 16:47:36,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:47:36,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:47:36,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:47:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:47:36,894 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 16:47:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 16:47:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:47:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:47:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 16:47:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 16:47:36,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:47:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 16:47:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 16:47:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 16:47:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 16:47:36,896 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 16:47:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 16:47:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 16:47:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 16:47:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:47:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:47:37,040 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:47:37,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:47:37,967 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:47:37,982 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:47:37,982 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-23 16:47:37,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:47:37 BoogieIcfgContainer [2021-11-23 16:47:37,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:47:37,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:47:37,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:47:37,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:47:37,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:47:35" (1/3) ... [2021-11-23 16:47:37,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7925d8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:47:37, skipping insertion in model container [2021-11-23 16:47:37,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:36" (2/3) ... [2021-11-23 16:47:37,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7925d8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:47:37, skipping insertion in model container [2021-11-23 16:47:37,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:47:37" (3/3) ... [2021-11-23 16:47:37,994 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-1.c [2021-11-23 16:47:38,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:47:38,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:47:38,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:47:38,095 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 16:47:38,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:47:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 329 states have (on average 1.6656534954407294) internal successors, (548), 333 states have internal predecessors, (548), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-23 16:47:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 16:47:38,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:38,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:38,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:38,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1184311821, now seen corresponding path program 1 times [2021-11-23 16:47:38,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716232795] [2021-11-23 16:47:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:38,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:38,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:38,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:38,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:47:38,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:38,532 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 16:47:38,537 INFO L158 Benchmark]: Toolchain (without parser) took 2608.56ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 46.0MB in the beginning and 51.7MB in the end (delta: -5.7MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,538 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 34.8MB in the beginning and 34.7MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:47:38,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.97ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 41.0MB in the end (delta: 4.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.72ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 37.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,541 INFO L158 Benchmark]: Boogie Preprocessor took 127.30ms. Allocated memory is still 69.2MB. Free memory was 37.3MB in the beginning and 33.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,542 INFO L158 Benchmark]: RCFGBuilder took 1174.52ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 33.5MB in the beginning and 64.0MB in the end (delta: -30.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,543 INFO L158 Benchmark]: TraceAbstraction took 548.35ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 51.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:47:38,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 34.8MB in the beginning and 34.7MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.97ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 41.0MB in the end (delta: 4.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.72ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 37.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.30ms. Allocated memory is still 69.2MB. Free memory was 37.3MB in the beginning and 33.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1174.52ms. Allocated memory was 69.2MB in the beginning and 98.6MB in the end (delta: 29.4MB). Free memory was 33.5MB in the beginning and 64.0MB in the end (delta: -30.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 548.35ms. Allocated memory is still 98.6MB. Free memory was 63.1MB in the beginning and 51.7MB in the end (delta: 11.4MB). 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 16:47:38,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f623ce2-ff4c-4bda-ab48-01c7c1e288bb/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