./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.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_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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_f909c6e0-5053-49f5-b73c-f18a488eed40/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 e565a6b24d6424f6fb761694db85d86d72d2d2e8ff7a736ef4f3a961a69f6a07 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:13:33,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:13:33,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:13:33,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:13:33,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:13:33,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:13:33,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:13:33,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:13:33,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:13:33,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:13:33,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:13:33,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:13:33,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:13:33,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:13:33,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:13:33,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:13:33,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:13:33,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:13:33,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:13:33,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:13:33,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:13:33,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:13:33,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:13:33,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:13:33,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:13:33,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:13:33,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:13:33,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:13:33,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:13:33,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:13:33,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:13:33,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:13:33,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:13:33,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:13:33,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:13:33,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:13:33,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:13:33,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:13:33,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:13:33,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:13:33,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:13:33,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:13:33,441 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:13:33,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:13:33,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:13:33,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:13:33,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:13:33,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:13:33,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:13:33,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:13:33,444 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:13:33,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:13:33,446 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:13:33,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:13:33,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:13:33,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:13:33,447 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:13:33,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:13:33,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:13:33,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:13:33,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:13:33,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:13:33,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:13:33,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:13:33,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:13:33,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:13:33,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:13:33,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:13:33,452 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:13:33,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:13:33,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:13:33,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:13:33,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:13:33,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:13:33,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:33,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:13:33,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:13:33,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:13:33,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:13:33,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:13:33,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:13:33,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:13:33,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:13:33,456 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_f909c6e0-5053-49f5-b73c-f18a488eed40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e565a6b24d6424f6fb761694db85d86d72d2d2e8ff7a736ef4f3a961a69f6a07 [2021-11-23 17:13:33,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:13:33,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:13:33,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:13:33,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:13:33,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:13:33,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c [2021-11-23 17:13:33,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d7735a457/15b7da70725b421392bd9b1136a33040/FLAG97c5ac850 [2021-11-23 17:13:34,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:13:34,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c [2021-11-23 17:13:34,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d7735a457/15b7da70725b421392bd9b1136a33040/FLAG97c5ac850 [2021-11-23 17:13:34,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d7735a457/15b7da70725b421392bd9b1136a33040 [2021-11-23 17:13:34,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:13:34,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:13:34,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:34,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:13:34,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:13:34,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:34" (1/1) ... [2021-11-23 17:13:34,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71890483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:34, skipping insertion in model container [2021-11-23 17:13:34,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:34" (1/1) ... [2021-11-23 17:13:34,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:13:34,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:34,955 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[914,927] [2021-11-23 17:13:35,029 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[7125,7138] [2021-11-23 17:13:35,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:35,101 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:13:35,114 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[914,927] [2021-11-23 17:13:35,133 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[7125,7138] [2021-11-23 17:13:35,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:35,214 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:13:35,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35 WrapperNode [2021-11-23 17:13:35,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:35,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:35,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:13:35,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:13:35,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,302 INFO L137 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 693 [2021-11-23 17:13:35,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:35,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:13:35,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:13:35,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:13:35,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:13:35,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:13:35,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:13:35,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:13:35,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:35" (1/1) ... [2021-11-23 17:13:35,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:13:35,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:13:35,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:13:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:13:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:13:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:13:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:13:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:13:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:13:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:13:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:13:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:13:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:13:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:13:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:13:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:13:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:13:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:13:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:13:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:13:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:13:35,473 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:13:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:13:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:13:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:13:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:13:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:13:35,474 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:13:35,474 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:13:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:13:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:13:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:13:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:13:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:13:35,475 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:13:35,584 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:13:35,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:13:36,387 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:13:36,468 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 17:13:36,473 INFO L158 Benchmark]: Toolchain (without parser) took 1796.91ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 45.0MB in the beginning and 80.8MB in the end (delta: -35.8MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,474 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 72.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.93ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 44.8MB in the beginning and 82.8MB in the end (delta: -38.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.90ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 79.1MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,479 INFO L158 Benchmark]: Boogie Preprocessor took 83.72ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 75.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,481 INFO L158 Benchmark]: RCFGBuilder took 1083.60ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 80.8MB in the end (delta: -5.2MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-11-23 17:13:36,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 72.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.93ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 44.8MB in the beginning and 82.8MB in the end (delta: -38.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.90ms. Allocated memory is still 117.4MB. Free memory was 82.8MB in the beginning and 79.1MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.72ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 75.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1083.60ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 80.8MB in the end (delta: -5.2MB). Peak memory consumption was 34.0MB. 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 17:13:36,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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_f909c6e0-5053-49f5-b73c-f18a488eed40/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 e565a6b24d6424f6fb761694db85d86d72d2d2e8ff7a736ef4f3a961a69f6a07 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:13:39,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:13:39,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:13:39,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:13:39,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:13:39,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:13:39,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:13:39,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:13:39,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:13:39,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:13:39,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:13:39,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:13:39,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:13:39,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:13:39,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:13:39,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:13:39,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:13:39,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:13:39,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:13:39,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:13:39,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:13:39,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:13:39,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:13:39,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:13:39,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:13:39,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:13:39,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:13:39,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:13:39,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:13:39,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:13:39,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:13:39,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:13:39,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:13:39,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:13:39,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:13:39,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:13:39,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:13:39,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:13:39,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:13:39,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:13:39,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:13:39,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:13:39,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:13:39,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:13:39,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:13:39,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:13:39,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:13:39,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:13:39,347 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:13:39,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:13:39,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:13:39,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:13:39,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:13:39,349 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:13:39,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:13:39,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:13:39,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:13:39,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:13:39,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:13:39,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:13:39,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:13:39,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:13:39,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:13:39,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:13:39,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:13:39,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:13:39,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:13:39,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:13:39,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:13:39,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:13:39,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:13:39,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:39,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:13:39,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:13:39,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:13:39,357 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:13:39,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:13:39,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:13:39,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:13:39,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:13:39,359 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_f909c6e0-5053-49f5-b73c-f18a488eed40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e565a6b24d6424f6fb761694db85d86d72d2d2e8ff7a736ef4f3a961a69f6a07 [2021-11-23 17:13:39,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:13:39,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:13:39,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:13:39,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:13:39,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:13:39,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c [2021-11-23 17:13:39,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d9b1a2a5c/b6cfa6468aff424aaaa4eae40b82e688/FLAG738772875 [2021-11-23 17:13:40,467 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:13:40,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c [2021-11-23 17:13:40,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d9b1a2a5c/b6cfa6468aff424aaaa4eae40b82e688/FLAG738772875 [2021-11-23 17:13:40,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/data/d9b1a2a5c/b6cfa6468aff424aaaa4eae40b82e688 [2021-11-23 17:13:40,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:13:40,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:13:40,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:40,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:13:40,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:13:40,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:40" (1/1) ... [2021-11-23 17:13:40,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9ffce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:40, skipping insertion in model container [2021-11-23 17:13:40,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:40" (1/1) ... [2021-11-23 17:13:40,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:13:40,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:41,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[914,927] [2021-11-23 17:13:41,073 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[7125,7138] [2021-11-23 17:13:41,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:41,264 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:13:41,280 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[914,927] [2021-11-23 17:13:41,326 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_f909c6e0-5053-49f5-b73c-f18a488eed40/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.06.cil-2.c[7125,7138] [2021-11-23 17:13:41,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:41,392 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:13:41,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41 WrapperNode [2021-11-23 17:13:41,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:41,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:41,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:13:41,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:13:41,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,516 INFO L137 Inliner]: procedures = 66, calls = 76, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 666 [2021-11-23 17:13:41,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:41,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:13:41,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:13:41,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:13:41,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:13:41,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:13:41,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:13:41,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:13:41,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (1/1) ... [2021-11-23 17:13:41,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:41,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:13:41,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:13:41,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:13:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:13:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:13:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:13:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:13:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:13:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:13:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:13:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:13:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:13:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:13:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:13:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:13:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:13:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:13:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:13:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:13:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:13:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:13:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:13:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:13:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:13:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:13:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:13:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:13:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:13:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:13:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:13:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:13:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:13:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:13:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:13:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:13:41,955 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:13:41,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:13:42,777 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:13:42,791 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:13:42,792 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-23 17:13:42,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:42 BoogieIcfgContainer [2021-11-23 17:13:42,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:13:42,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:13:42,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:13:42,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:13:42,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:13:40" (1/3) ... [2021-11-23 17:13:42,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2093d092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:42, skipping insertion in model container [2021-11-23 17:13:42,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:41" (2/3) ... [2021-11-23 17:13:42,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2093d092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:42, skipping insertion in model container [2021-11-23 17:13:42,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:42" (3/3) ... [2021-11-23 17:13:42,817 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.06.cil-2.c [2021-11-23 17:13:42,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:13:42,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:13:42,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:13:42,888 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 17:13:42,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:13:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 289 states have internal predecessors, (453), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-23 17:13:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 17:13:42,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:42,926 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] [2021-11-23 17:13:42,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1975408481, now seen corresponding path program 1 times [2021-11-23 17:13:42,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:42,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915066469] [2021-11-23 17:13:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:42,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:42,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:42,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:13:43,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:43,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:43,248 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 17:13:43,252 INFO L158 Benchmark]: Toolchain (without parser) took 2458.57ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 39.2MB in the beginning and 45.5MB in the end (delta: -6.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,253 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:13:43,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.32ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 35.2MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.99ms. Allocated memory is still 60.8MB. Free memory was 35.0MB in the beginning and 31.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,255 INFO L158 Benchmark]: Boogie Preprocessor took 117.43ms. Allocated memory is still 60.8MB. Free memory was 31.6MB in the beginning and 28.2MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,260 INFO L158 Benchmark]: RCFGBuilder took 1164.47ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 28.1MB in the beginning and 57.4MB in the end (delta: -29.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,261 INFO L158 Benchmark]: TraceAbstraction took 440.21ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 45.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:13:43,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.32ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 35.2MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.99ms. Allocated memory is still 60.8MB. Free memory was 35.0MB in the beginning and 31.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 117.43ms. Allocated memory is still 60.8MB. Free memory was 31.6MB in the beginning and 28.2MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1164.47ms. Allocated memory was 60.8MB in the beginning and 83.9MB in the end (delta: 23.1MB). Free memory was 28.1MB in the beginning and 57.4MB in the end (delta: -29.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 440.21ms. Allocated memory is still 83.9MB. Free memory was 56.6MB in the beginning and 45.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. 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 17:13:43,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f909c6e0-5053-49f5-b73c-f18a488eed40/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