./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.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_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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_84369f38-780d-43ed-91d8-9921dda13808/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 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:17:02,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:17:02,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:17:02,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:17:02,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:17:02,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:17:03,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:17:03,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:17:03,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:17:03,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:17:03,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:17:03,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:17:03,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:17:03,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:17:03,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:17:03,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:17:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:17:03,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:17:03,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:17:03,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:17:03,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:17:03,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:17:03,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:17:03,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:17:03,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:17:03,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:17:03,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:17:03,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:17:03,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:17:03,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:17:03,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:17:03,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:17:03,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:17:03,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:17:03,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:17:03,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:17:03,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:17:03,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:17:03,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:17:03,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:17:03,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:17:03,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:17:03,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:17:03,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:17:03,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:17:03,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:17:03,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:17:03,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:17:03,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:17:03,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:17:03,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:17:03,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:17:03,123 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:17:03,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:17:03,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:17:03,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:17:03,124 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:17:03,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:17:03,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:17:03,125 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:17:03,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:17:03,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:17:03,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:17:03,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:17:03,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:17:03,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:17:03,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:17:03,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:17:03,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:17:03,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:17:03,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:17:03,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:17:03,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:17:03,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:17:03,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:03,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:17:03,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:17:03,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:17:03,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:17:03,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:17:03,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:17:03,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:17:03,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:17:03,132 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_84369f38-780d-43ed-91d8-9921dda13808/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2021-11-23 17:17:03,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:17:03,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:17:03,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:17:03,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:17:03,434 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:17:03,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2021-11-23 17:17:03,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/b32d53688/7e5e956b19fa40fba70aa40b937c38e3/FLAG002f8e364 [2021-11-23 17:17:04,817 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:17:04,819 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2021-11-23 17:17:04,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/b32d53688/7e5e956b19fa40fba70aa40b937c38e3/FLAG002f8e364 [2021-11-23 17:17:05,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/b32d53688/7e5e956b19fa40fba70aa40b937c38e3 [2021-11-23 17:17:05,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:17:05,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:17:05,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:05,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:17:05,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:17:05,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:05" (1/1) ... [2021-11-23 17:17:05,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3600856c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:05, skipping insertion in model container [2021-11-23 17:17:05,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:05" (1/1) ... [2021-11-23 17:17:05,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:17:05,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:17:08,555 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2021-11-23 17:17:08,606 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2021-11-23 17:17:08,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:08,862 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:17:10,184 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2021-11-23 17:17:10,196 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2021-11-23 17:17:10,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:10,318 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:17:10,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10 WrapperNode [2021-11-23 17:17:10,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:10,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:10,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:17:10,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:17:10,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:10,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:10,921 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2021-11-23 17:17:10,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:10,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:17:10,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:17:10,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:17:10,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:10,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:17:11,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:17:11,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:17:11,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:17:11,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:10" (1/1) ... [2021-11-23 17:17:11,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:11,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:17:11,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:17:11,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:17:11,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:17:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 17:17:11,676 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 17:17:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:17:11,676 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:17:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 17:17:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 17:17:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 17:17:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 17:17:11,677 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 17:17:11,677 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 17:17:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 17:17:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 17:17:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:17:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:17:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:17:11,844 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:17:11,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:17:20,159 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:17:20,299 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 17:17:20,306 INFO L158 Benchmark]: Toolchain (without parser) took 14876.08ms. Allocated memory was 142.6MB in the beginning and 788.5MB in the end (delta: 645.9MB). Free memory was 93.6MB in the beginning and 223.8MB in the end (delta: -130.2MB). Peak memory consumption was 513.3MB. Max. memory is 16.1GB. [2021-11-23 17:17:20,307 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:17:20,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4886.23ms. Allocated memory was 142.6MB in the beginning and 228.6MB in the end (delta: 86.0MB). Free memory was 93.6MB in the beginning and 87.6MB in the end (delta: 6.0MB). Peak memory consumption was 99.0MB. Max. memory is 16.1GB. [2021-11-23 17:17:20,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 601.29ms. Allocated memory was 228.6MB in the beginning and 394.3MB in the end (delta: 165.7MB). Free memory was 87.6MB in the beginning and 262.5MB in the end (delta: -174.9MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2021-11-23 17:17:20,312 INFO L158 Benchmark]: Boogie Preprocessor took 649.21ms. Allocated memory is still 394.3MB. Free memory was 262.5MB in the beginning and 229.2MB in the end (delta: 33.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2021-11-23 17:17:20,314 INFO L158 Benchmark]: RCFGBuilder took 8729.81ms. Allocated memory was 394.3MB in the beginning and 788.5MB in the end (delta: 394.3MB). Free memory was 229.2MB in the beginning and 223.8MB in the end (delta: 5.4MB). Peak memory consumption was 397.3MB. Max. memory is 16.1GB. [2021-11-23 17:17:20,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 86.0MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4886.23ms. Allocated memory was 142.6MB in the beginning and 228.6MB in the end (delta: 86.0MB). Free memory was 93.6MB in the beginning and 87.6MB in the end (delta: 6.0MB). Peak memory consumption was 99.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 601.29ms. Allocated memory was 228.6MB in the beginning and 394.3MB in the end (delta: 165.7MB). Free memory was 87.6MB in the beginning and 262.5MB in the end (delta: -174.9MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 649.21ms. Allocated memory is still 394.3MB. Free memory was 262.5MB in the beginning and 229.2MB in the end (delta: 33.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * RCFGBuilder took 8729.81ms. Allocated memory was 394.3MB in the beginning and 788.5MB in the end (delta: 394.3MB). Free memory was 229.2MB in the beginning and 223.8MB in the end (delta: 5.4MB). Peak memory consumption was 397.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:17:20,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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_84369f38-780d-43ed-91d8-9921dda13808/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 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:17:23,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:17:23,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:17:23,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:17:23,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:17:23,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:17:23,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:17:23,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:17:23,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:17:23,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:17:23,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:17:23,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:17:23,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:17:23,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:17:23,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:17:23,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:17:23,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:17:23,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:17:23,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:17:23,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:17:23,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:17:23,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:17:23,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:17:23,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:17:23,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:17:23,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:17:23,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:17:23,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:17:23,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:17:23,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:17:23,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:17:23,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:17:23,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:17:23,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:17:23,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:17:23,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:17:23,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:17:23,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:17:23,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:17:23,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:17:23,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:17:23,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:17:23,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:17:23,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:17:23,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:17:23,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:17:23,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:17:23,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:17:23,284 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:17:23,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:17:23,284 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:17:23,285 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:17:23,285 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:17:23,285 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:17:23,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:17:23,287 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:17:23,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:17:23,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:17:23,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:17:23,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:17:23,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:17:23,288 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:17:23,288 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:17:23,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:17:23,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:17:23,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:17:23,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:17:23,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:17:23,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:17:23,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:17:23,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:17:23,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:23,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:17:23,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:17:23,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:17:23,292 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:17:23,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:17:23,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:17:23,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:17:23,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:17:23,293 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_84369f38-780d-43ed-91d8-9921dda13808/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2021-11-23 17:17:23,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:17:23,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:17:23,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:17:23,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:17:23,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:17:23,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2021-11-23 17:17:23,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/f3e0a2445/a221b6830c6f4a3a92a9ab2152e0d3f4/FLAG9682d0bb8 [2021-11-23 17:17:25,231 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:17:25,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2021-11-23 17:17:25,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/f3e0a2445/a221b6830c6f4a3a92a9ab2152e0d3f4/FLAG9682d0bb8 [2021-11-23 17:17:25,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/data/f3e0a2445/a221b6830c6f4a3a92a9ab2152e0d3f4 [2021-11-23 17:17:25,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:17:25,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:17:25,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:25,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:17:25,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:17:25,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:25" (1/1) ... [2021-11-23 17:17:25,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b511b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:25, skipping insertion in model container [2021-11-23 17:17:25,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:17:25" (1/1) ... [2021-11-23 17:17:25,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:17:26,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:17:28,846 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2021-11-23 17:17:28,904 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2021-11-23 17:17:29,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:29,232 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:17:30,779 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2021-11-23 17:17:30,794 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_84369f38-780d-43ed-91d8-9921dda13808/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2021-11-23 17:17:30,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:17:30,923 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:17:30,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30 WrapperNode [2021-11-23 17:17:30,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:17:30,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:30,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:17:30,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:17:30,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:31,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:31,625 INFO L137 Inliner]: procedures = 51, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12653 [2021-11-23 17:17:31,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:17:31,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:17:31,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:17:31,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:17:31,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:31,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:31,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:31,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:32,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:32,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:32,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:32,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:17:32,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:17:32,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:17:32,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:17:32,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (1/1) ... [2021-11-23 17:17:32,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:17:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:17:32,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:17:32,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:17:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:17:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 17:17:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 17:17:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:17:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:17:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 17:17:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 17:17:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:17:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 17:17:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 17:17:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 17:17:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 17:17:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 17:17:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 17:17:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:17:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:17:32,641 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:17:32,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:17:44,400 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:17:44,451 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:17:44,452 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-23 17:17:44,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:17:44 BoogieIcfgContainer [2021-11-23 17:17:44,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:17:44,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:17:44,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:17:44,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:17:44,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:17:25" (1/3) ... [2021-11-23 17:17:44,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7260d665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:17:44, skipping insertion in model container [2021-11-23 17:17:44,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:17:30" (2/3) ... [2021-11-23 17:17:44,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7260d665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:17:44, skipping insertion in model container [2021-11-23 17:17:44,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:17:44" (3/3) ... [2021-11-23 17:17:44,468 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.c [2021-11-23 17:17:44,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:17:44,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:17:44,547 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:17:44,556 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 17:17:44,557 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:17:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-23 17:17:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 17:17:44,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:17:44,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:17:44,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:17:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:17:44,663 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2021-11-23 17:17:44,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:17:44,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557813233] [2021-11-23 17:17:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:17:44,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:17:44,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:17:44,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:17:44,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:17:44,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:17:44,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:17:44,958 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 17:17:44,966 INFO L158 Benchmark]: Toolchain (without parser) took 19161.34ms. Allocated memory was 69.2MB in the beginning and 847.2MB in the end (delta: 778.0MB). Free memory was 33.0MB in the beginning and 521.5MB in the end (delta: -488.5MB). Peak memory consumption was 288.7MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,967 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:17:44,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5118.02ms. Allocated memory was 69.2MB in the beginning and 211.8MB in the end (delta: 142.6MB). Free memory was 32.8MB in the beginning and 118.6MB in the end (delta: -85.8MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 700.87ms. Allocated memory is still 211.8MB. Free memory was 118.6MB in the beginning and 76.8MB in the end (delta: 41.8MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,970 INFO L158 Benchmark]: Boogie Preprocessor took 747.71ms. Allocated memory was 211.8MB in the beginning and 423.6MB in the end (delta: 211.8MB). Free memory was 76.8MB in the beginning and 255.1MB in the end (delta: -178.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,971 INFO L158 Benchmark]: RCFGBuilder took 12081.76ms. Allocated memory was 423.6MB in the beginning and 847.2MB in the end (delta: 423.6MB). Free memory was 255.1MB in the beginning and 545.6MB in the end (delta: -290.5MB). Peak memory consumption was 330.3MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,972 INFO L158 Benchmark]: TraceAbstraction took 504.52ms. Allocated memory is still 847.2MB. Free memory was 544.5MB in the beginning and 521.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 17:17:44,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5118.02ms. Allocated memory was 69.2MB in the beginning and 211.8MB in the end (delta: 142.6MB). Free memory was 32.8MB in the beginning and 118.6MB in the end (delta: -85.8MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 700.87ms. Allocated memory is still 211.8MB. Free memory was 118.6MB in the beginning and 76.8MB in the end (delta: 41.8MB). Peak memory consumption was 88.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 747.71ms. Allocated memory was 211.8MB in the beginning and 423.6MB in the end (delta: 211.8MB). Free memory was 76.8MB in the beginning and 255.1MB in the end (delta: -178.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * RCFGBuilder took 12081.76ms. Allocated memory was 423.6MB in the beginning and 847.2MB in the end (delta: 423.6MB). Free memory was 255.1MB in the beginning and 545.6MB in the end (delta: -290.5MB). Peak memory consumption was 330.3MB. Max. memory is 16.1GB. * TraceAbstraction took 504.52ms. Allocated memory is still 847.2MB. Free memory was 544.5MB in the beginning and 521.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. 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 17:17:45,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84369f38-780d-43ed-91d8-9921dda13808/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