./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:51:23,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:51:23,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:51:23,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:51:23,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:51:23,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:51:23,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:51:23,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:51:23,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:51:23,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:51:23,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:51:23,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:51:23,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:51:23,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:51:23,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:51:23,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:51:23,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:51:23,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:51:23,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:51:23,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:51:23,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:51:23,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:51:23,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:51:23,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:51:23,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:51:23,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:51:23,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:51:23,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:51:23,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:51:23,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:51:23,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:51:23,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:51:23,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:51:23,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:51:23,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:51:23,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:51:23,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:51:23,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:51:23,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:51:23,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:51:23,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:51:23,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:51:24,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:51:24,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:51:24,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:51:24,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:51:24,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:51:24,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:51:24,011 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:51:24,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:51:24,012 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:51:24,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:51:24,012 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:51:24,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:51:24,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:51:24,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:51:24,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:51:24,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:51:24,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:51:24,015 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:51:24,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:51:24,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:51:24,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:51:24,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:51:24,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:51:24,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:51:24,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:51:24,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:51:24,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:51:24,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:51:24,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:51:24,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:51:24,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:51:24,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:51:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:24,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:51:24,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:51:24,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:51:24,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:51:24,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:51:24,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:51:24,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:51:24,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:51:24,025 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a [2021-11-23 16:51:24,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:51:24,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:51:24,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:51:24,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:51:24,401 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:51:24,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2021-11-23 16:51:24,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/a5e0c1932/7e0800b3c4fc44b38e364dd1df638bd6/FLAG71e91e1ed [2021-11-23 16:51:25,120 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:51:25,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2021-11-23 16:51:25,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/a5e0c1932/7e0800b3c4fc44b38e364dd1df638bd6/FLAG71e91e1ed [2021-11-23 16:51:25,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/a5e0c1932/7e0800b3c4fc44b38e364dd1df638bd6 [2021-11-23 16:51:25,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:51:25,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:51:25,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:25,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:51:25,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:51:25,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:25" (1/1) ... [2021-11-23 16:51:25,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781bd586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:25, skipping insertion in model container [2021-11-23 16:51:25,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:25" (1/1) ... [2021-11-23 16:51:25,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:51:25,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:51:25,751 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2021-11-23 16:51:25,813 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2021-11-23 16:51:25,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:25,987 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:51:26,012 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2021-11-23 16:51:26,060 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2021-11-23 16:51:26,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:26,139 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:51:26,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26 WrapperNode [2021-11-23 16:51:26,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:26,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:26,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:51:26,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:51:26,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,239 INFO L137 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 654 [2021-11-23 16:51:26,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:26,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:51:26,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:51:26,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:51:26,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:51:26,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:51:26,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:51:26,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:51:26,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:26" (1/1) ... [2021-11-23 16:51:26,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:26,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:51:26,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:51:26,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:51:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:51:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:51:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:51:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 16:51:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 16:51:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:51:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:51:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:51:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:51:26,393 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:51:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:51:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:51:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:51:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:51:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:51:26,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:51:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:51:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:51:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:51:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:51:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:51:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:51:26,396 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 16:51:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 16:51:26,520 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:51:26,522 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:51:27,426 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:51:27,512 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 16:51:27,518 INFO L158 Benchmark]: Toolchain (without parser) took 2109.29ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 65.7MB in the beginning and 109.5MB in the end (delta: -43.8MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-11-23 16:51:27,519 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 107.0MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:51:27,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 725.04ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 73.9MB in the end (delta: -8.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:51:27,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.78ms. Allocated memory is still 107.0MB. Free memory was 73.9MB in the beginning and 70.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:51:27,527 INFO L158 Benchmark]: Boogie Preprocessor took 66.05ms. Allocated memory is still 107.0MB. Free memory was 70.6MB in the beginning and 67.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:51:27,528 INFO L158 Benchmark]: RCFGBuilder took 1207.59ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 67.7MB in the beginning and 109.5MB in the end (delta: -41.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2021-11-23 16:51:27,533 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 107.0MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 725.04ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 73.9MB in the end (delta: -8.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.78ms. Allocated memory is still 107.0MB. Free memory was 73.9MB in the beginning and 70.6MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.05ms. Allocated memory is still 107.0MB. Free memory was 70.6MB in the beginning and 67.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1207.59ms. Allocated memory was 107.0MB in the beginning and 138.4MB in the end (delta: 31.5MB). Free memory was 67.7MB in the beginning and 109.5MB in the end (delta: -41.8MB). Peak memory consumption was 39.9MB. 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 16:51:27,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:51:30,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:51:30,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:51:30,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:51:30,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:51:30,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:51:30,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:51:30,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:51:30,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:51:30,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:51:30,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:51:30,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:51:30,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:51:30,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:51:30,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:51:30,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:51:30,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:51:30,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:51:30,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:51:30,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:51:30,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:51:30,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:51:30,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:51:30,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:51:30,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:51:30,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:51:30,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:51:30,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:51:30,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:51:30,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:51:30,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:51:30,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:51:30,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:51:30,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:51:30,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:51:30,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:51:30,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:51:30,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:51:30,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:51:30,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:51:30,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:51:30,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:51:30,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:51:30,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:51:30,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:51:30,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:51:30,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:51:30,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:51:30,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:51:30,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:51:30,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:51:30,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:51:30,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:51:30,707 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:51:30,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:51:30,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:51:30,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:51:30,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:51:30,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:51:30,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:51:30,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:51:30,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:51:30,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:51:30,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:51:30,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:51:30,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:51:30,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:51:30,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:51:30,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:51:30,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:51:30,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:51:30,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:30,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:51:30,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:51:30,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:51:30,715 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:51:30,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:51:30,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:51:30,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:51:30,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:51:30,716 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2468c605d5c29b15a54525a5c6944fa0a2b4d36426cacd5fefa10555cb2b8a7a [2021-11-23 16:51:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:51:31,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:51:31,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:51:31,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:51:31,191 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:51:31,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2021-11-23 16:51:31,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/aa5b09ab1/1cf7a3650f784ae782b972b445cf7d7d/FLAGa4a57f3e6 [2021-11-23 16:51:32,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:51:32,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2021-11-23 16:51:32,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/aa5b09ab1/1cf7a3650f784ae782b972b445cf7d7d/FLAGa4a57f3e6 [2021-11-23 16:51:32,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/data/aa5b09ab1/1cf7a3650f784ae782b972b445cf7d7d [2021-11-23 16:51:32,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:51:32,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:51:32,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:32,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:51:32,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:51:32,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:32" (1/1) ... [2021-11-23 16:51:32,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614dcf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:32, skipping insertion in model container [2021-11-23 16:51:32,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:32" (1/1) ... [2021-11-23 16:51:32,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:51:32,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:51:32,641 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2021-11-23 16:51:32,701 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2021-11-23 16:51:32,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:32,900 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:51:32,935 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[913,926] [2021-11-23 16:51:32,982 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_5fc77fb4-4e1e-46de-9bf3-112b634edc34/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-2.c[5977,5990] [2021-11-23 16:51:33,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:33,082 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:51:33,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33 WrapperNode [2021-11-23 16:51:33,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:33,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:33,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:51:33,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:51:33,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,190 INFO L137 Inliner]: procedures = 59, calls = 64, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 626 [2021-11-23 16:51:33,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:33,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:51:33,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:51:33,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:51:33,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:51:33,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:51:33,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:51:33,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:51:33,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (1/1) ... [2021-11-23 16:51:33,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:33,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:51:33,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:51:33,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:51:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:51:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:51:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:51:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 16:51:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 16:51:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:51:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:51:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:51:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:51:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:51:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:51:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:51:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:51:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:51:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:51:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:51:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:51:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:51:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:51:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:51:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:51:33,420 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:51:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 16:51:33,421 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 16:51:33,605 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:51:33,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:51:34,480 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:51:34,493 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:51:34,494 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-23 16:51:34,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:51:34 BoogieIcfgContainer [2021-11-23 16:51:34,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:51:34,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:51:34,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:51:34,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:51:34,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:51:32" (1/3) ... [2021-11-23 16:51:34,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d7ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:51:34, skipping insertion in model container [2021-11-23 16:51:34,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:33" (2/3) ... [2021-11-23 16:51:34,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d7ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:51:34, skipping insertion in model container [2021-11-23 16:51:34,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:51:34" (3/3) ... [2021-11-23 16:51:34,507 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-2.c [2021-11-23 16:51:34,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:51:34,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:51:34,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:51:34,586 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 16:51:34,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:51:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 247 states have (on average 1.6153846153846154) internal successors, (399), 254 states have internal predecessors, (399), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-23 16:51:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 16:51:34,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:34,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:34,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:51:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -335189264, now seen corresponding path program 1 times [2021-11-23 16:51:34,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:34,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912672916] [2021-11-23 16:51:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:34,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:34,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:34,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:51:34,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:34,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:34,938 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 16:51:34,944 INFO L158 Benchmark]: Toolchain (without parser) took 2579.92ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 38.4MB in the beginning and 47.0MB in the end (delta: -8.6MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,944 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:51:34,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.95ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.0MB in the end (delta: 272.2kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.18ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 34.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,947 INFO L158 Benchmark]: Boogie Preprocessor took 117.43ms. Allocated memory is still 60.8MB. Free memory was 34.6MB in the beginning and 31.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,952 INFO L158 Benchmark]: RCFGBuilder took 1180.05ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 31.3MB in the beginning and 58.0MB in the end (delta: -26.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,953 INFO L158 Benchmark]: TraceAbstraction took 441.60ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 47.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:51:34,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.95ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.0MB in the end (delta: 272.2kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.18ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 34.6MB in the end (delta: 3.3MB). 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 34.6MB in the beginning and 31.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1180.05ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 31.3MB in the beginning and 58.0MB in the end (delta: -26.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 441.60ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 47.0MB in the end (delta: 10.6MB). 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 16:51:35,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fc77fb4-4e1e-46de-9bf3-112b634edc34/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