./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:53:17,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:53:17,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:53:18,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:53:18,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:53:18,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:53:18,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:53:18,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:53:18,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:53:18,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:53:18,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:53:18,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:53:18,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:53:18,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:53:18,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:53:18,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:53:18,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:53:18,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:53:18,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:53:18,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:53:18,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:53:18,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:53:18,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:53:18,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:53:18,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:53:18,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:53:18,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:53:18,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:53:18,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:53:18,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:53:18,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:53:18,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:53:18,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:53:18,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:53:18,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:53:18,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:53:18,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:53:18,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:53:18,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:53:18,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:53:18,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:53:18,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:53:18,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:53:18,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:53:18,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:53:18,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:53:18,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:53:18,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:53:18,101 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:53:18,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:53:18,101 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:53:18,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:53:18,102 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:53:18,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:53:18,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:53:18,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:53:18,103 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:53:18,103 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:53:18,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:53:18,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:53:18,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:53:18,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:53:18,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:53:18,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:53:18,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:53:18,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:53:18,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:53:18,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:53:18,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:53:18,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:53:18,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:53:18,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:53:18,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:53:18,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:53:18,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:53:18,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:53:18,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:53:18,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:53:18,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:53:18,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:53:18,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:53:18,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:53:18,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:53:18,110 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2021-11-23 16:53:18,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:53:18,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:53:18,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:53:18,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:53:18,428 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:53:18,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2021-11-23 16:53:18,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/9e8f85c3d/f7b2e25edb2f47258d34c394f344b8bb/FLAGc742f3584 [2021-11-23 16:53:19,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:53:19,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2021-11-23 16:53:19,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/9e8f85c3d/f7b2e25edb2f47258d34c394f344b8bb/FLAGc742f3584 [2021-11-23 16:53:19,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/9e8f85c3d/f7b2e25edb2f47258d34c394f344b8bb [2021-11-23 16:53:19,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:53:19,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:53:19,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:19,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:53:19,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:53:19,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:19" (1/1) ... [2021-11-23 16:53:19,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fca3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:19, skipping insertion in model container [2021-11-23 16:53:19,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:19" (1/1) ... [2021-11-23 16:53:19,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:53:19,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:53:19,742 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2021-11-23 16:53:19,792 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2021-11-23 16:53:19,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:19,957 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:53:19,976 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2021-11-23 16:53:19,994 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2021-11-23 16:53:20,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:20,129 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:53:20,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20 WrapperNode [2021-11-23 16:53:20,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:20,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:53:20,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:53:20,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:53:20,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,244 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 997 [2021-11-23 16:53:20,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:53:20,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:53:20,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:53:20,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:53:20,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:53:20,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:53:20,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:53:20,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:53:20,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:20" (1/1) ... [2021-11-23 16:53:20,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:53:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:53:20,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:53:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:53:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:53:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:53:20,446 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:53:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 16:53:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 16:53:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:53:20,447 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:53:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:53:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:53:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:53:20,449 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:53:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:53:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:53:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:53:20,450 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:53:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:53:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:53:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:53:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:53:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:53:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:53:20,452 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:53:20,600 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:53:20,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:53:21,576 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:53:21,632 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 16:53:21,645 INFO L158 Benchmark]: Toolchain (without parser) took 2198.90ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 58.7MB in the beginning and 76.5MB in the end (delta: -17.8MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2021-11-23 16:53:21,645 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:53:21,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 684.66ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 82.0MB in the end (delta: -23.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:53:21,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.24ms. Allocated memory is still 119.5MB. Free memory was 82.0MB in the beginning and 77.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:53:21,653 INFO L158 Benchmark]: Boogie Preprocessor took 114.54ms. Allocated memory is still 119.5MB. Free memory was 77.4MB in the beginning and 73.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:53:21,654 INFO L158 Benchmark]: RCFGBuilder took 1280.25ms. Allocated memory is still 119.5MB. Free memory was 73.2MB in the beginning and 76.5MB in the end (delta: -3.3MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2021-11-23 16:53:21,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 684.66ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 82.0MB in the end (delta: -23.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.24ms. Allocated memory is still 119.5MB. Free memory was 82.0MB in the beginning and 77.4MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.54ms. Allocated memory is still 119.5MB. Free memory was 77.4MB in the beginning and 73.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1280.25ms. Allocated memory is still 119.5MB. Free memory was 73.2MB in the beginning and 76.5MB in the end (delta: -3.3MB). Peak memory consumption was 39.7MB. 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 16:53:21,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:53:24,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:53:24,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:53:24,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:53:24,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:53:24,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:53:24,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:53:24,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:53:24,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:53:24,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:53:24,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:53:24,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:53:24,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:53:24,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:53:24,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:53:24,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:53:24,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:53:24,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:53:24,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:53:24,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:53:24,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:53:24,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:53:24,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:53:24,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:53:24,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:53:24,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:53:24,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:53:24,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:53:24,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:53:24,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:53:24,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:53:24,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:53:24,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:53:24,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:53:24,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:53:24,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:53:24,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:53:24,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:53:24,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:53:24,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:53:24,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:53:24,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:53:24,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:53:24,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:53:24,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:53:24,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:53:24,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:53:24,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:53:24,505 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:53:24,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:53:24,506 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:53:24,506 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:53:24,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:53:24,507 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:53:24,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:53:24,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:53:24,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:53:24,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:53:24,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:53:24,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:53:24,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:53:24,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:53:24,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:53:24,511 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:53:24,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:53:24,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:53:24,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:53:24,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:53:24,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:53:24,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:53:24,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:53:24,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:53:24,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:53:24,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:53:24,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:53:24,514 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:53:24,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:53:24,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:53:24,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:53:24,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:53:24,515 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2021-11-23 16:53:24,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:53:24,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:53:24,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:53:24,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:53:24,920 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:53:24,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2021-11-23 16:53:25,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/e61c782be/118ae9c9ca4542109fbc1e1204b70d5d/FLAGbb2deca86 [2021-11-23 16:53:25,640 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:53:25,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2021-11-23 16:53:25,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/e61c782be/118ae9c9ca4542109fbc1e1204b70d5d/FLAGbb2deca86 [2021-11-23 16:53:25,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/data/e61c782be/118ae9c9ca4542109fbc1e1204b70d5d [2021-11-23 16:53:25,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:53:25,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:53:25,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:25,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:53:25,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:53:25,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:25" (1/1) ... [2021-11-23 16:53:25,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf0e0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:25, skipping insertion in model container [2021-11-23 16:53:25,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:53:25" (1/1) ... [2021-11-23 16:53:25,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:53:26,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:53:26,160 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2021-11-23 16:53:26,260 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2021-11-23 16:53:26,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:26,493 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:53:26,520 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2021-11-23 16:53:26,532 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_afb6065a-36c6-469c-9c1b-1204f6ab3e45/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2021-11-23 16:53:26,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:53:26,656 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:53:26,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26 WrapperNode [2021-11-23 16:53:26,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:53:26,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:53:26,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:53:26,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:53:26,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,782 INFO L137 Inliner]: procedures = 71, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 958 [2021-11-23 16:53:26,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:53:26,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:53:26,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:53:26,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:53:26,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:53:26,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:53:26,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:53:26,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:53:26,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (1/1) ... [2021-11-23 16:53:26,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:53:26,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:53:26,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:53:27,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:53:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:53:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:53:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:53:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 16:53:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 16:53:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 16:53:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 16:53:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 16:53:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 16:53:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 16:53:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 16:53:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 16:53:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 16:53:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:53:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 16:53:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 16:53:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 16:53:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 16:53:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:53:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:53:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 16:53:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 16:53:27,154 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:53:27,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:53:28,309 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:53:28,334 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:53:28,335 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-23 16:53:28,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:53:28 BoogieIcfgContainer [2021-11-23 16:53:28,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:53:28,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:53:28,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:53:28,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:53:28,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:53:25" (1/3) ... [2021-11-23 16:53:28,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aae1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:53:28, skipping insertion in model container [2021-11-23 16:53:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:53:26" (2/3) ... [2021-11-23 16:53:28,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aae1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:53:28, skipping insertion in model container [2021-11-23 16:53:28,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:53:28" (3/3) ... [2021-11-23 16:53:28,352 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2021-11-23 16:53:28,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:53:28,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 16:53:28,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:53:28,426 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 16:53:28,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 16:53:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-23 16:53:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 16:53:28,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:53:28,469 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 16:53:28,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:53:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:53:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1865263090, now seen corresponding path program 1 times [2021-11-23 16:53:28,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:53:28,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24020119] [2021-11-23 16:53:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:53:28,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:53:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:53:28,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:53:28,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:53:28,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 16:53:28,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:53:28,819 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 16:53:28,824 INFO L158 Benchmark]: Toolchain (without parser) took 2901.97ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.5MB in the beginning and 34.8MB in the end (delta: 2.7MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,829 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:53:28,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 732.15ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 30.0MB in the end (delta: 7.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 131.73ms. Allocated memory is still 60.8MB. Free memory was 29.9MB in the beginning and 25.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,833 INFO L158 Benchmark]: Boogie Preprocessor took 149.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.4MB in the beginning and 50.6MB in the end (delta: -25.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,834 INFO L158 Benchmark]: RCFGBuilder took 1398.54ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 47.1MB in the end (delta: 3.5MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,836 INFO L158 Benchmark]: TraceAbstraction took 481.32ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 34.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:53:28,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 732.15ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 30.0MB in the end (delta: 7.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 131.73ms. Allocated memory is still 60.8MB. Free memory was 29.9MB in the beginning and 25.4MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 149.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 25.4MB in the beginning and 50.6MB in the end (delta: -25.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1398.54ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 47.1MB in the end (delta: 3.5MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * TraceAbstraction took 481.32ms. Allocated memory is still 73.4MB. Free memory was 46.7MB in the beginning and 34.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:53:28,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afb6065a-36c6-469c-9c1b-1204f6ab3e45/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