./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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_d1849007-90d4-49af-86b2-a6cf3660b908/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 fb1091d73aa20044da5f23529d9b458b78a9fc672c28c9226a1c2bddab62484e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:06:00,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:06:00,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:06:00,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:06:00,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:06:00,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:06:00,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:06:00,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:06:00,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:06:00,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:06:00,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:06:00,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:06:00,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:06:00,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:06:00,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:06:00,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:06:00,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:06:00,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:06:00,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:06:00,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:06:00,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:06:00,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:06:00,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:06:00,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:06:00,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:06:00,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:06:00,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:06:00,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:06:00,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:06:00,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:06:00,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:06:00,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:06:00,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:06:00,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:06:00,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:06:00,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:06:00,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:06:00,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:06:00,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:06:00,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:06:00,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:06:00,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:06:00,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:06:00,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:06:00,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:06:00,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:06:00,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:06:00,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:06:00,326 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:06:00,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:06:00,327 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:06:00,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:06:00,328 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:06:00,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:06:00,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:06:00,329 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:06:00,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:06:00,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:06:00,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:06:00,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:06:00,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:06:00,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:06:00,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:06:00,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:06:00,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:06:00,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:06:00,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:06:00,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:06:00,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:06:00,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:06:00,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:06:00,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:06:00,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:06:00,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:06:00,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:00,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:06:00,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:06:00,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:06:00,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:06:00,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:06:00,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:06:00,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:06:00,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:06:00,341 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_d1849007-90d4-49af-86b2-a6cf3660b908/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb1091d73aa20044da5f23529d9b458b78a9fc672c28c9226a1c2bddab62484e [2021-11-23 17:06:00,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:06:00,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:06:00,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:06:00,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:06:00,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:06:00,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c [2021-11-23 17:06:00,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/71c37ba3e/0091cf395d5142e5be9f1b0363a0d4e2/FLAGeb636bdb3 [2021-11-23 17:06:01,289 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:06:01,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c [2021-11-23 17:06:01,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/71c37ba3e/0091cf395d5142e5be9f1b0363a0d4e2/FLAGeb636bdb3 [2021-11-23 17:06:01,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/71c37ba3e/0091cf395d5142e5be9f1b0363a0d4e2 [2021-11-23 17:06:01,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:06:01,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:06:01,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:01,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:06:01,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:06:01,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:01" (1/1) ... [2021-11-23 17:06:01,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:01, skipping insertion in model container [2021-11-23 17:06:01,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:01" (1/1) ... [2021-11-23 17:06:01,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:06:01,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:06:01,948 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[914,927] [2021-11-23 17:06:02,054 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[7125,7138] [2021-11-23 17:06:02,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:02,198 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:06:02,223 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[914,927] [2021-11-23 17:06:02,261 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[7125,7138] [2021-11-23 17:06:02,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:02,354 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:06:02,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02 WrapperNode [2021-11-23 17:06:02,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:02,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:02,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:06:02,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:06:02,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,426 INFO L137 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 751 [2021-11-23 17:06:02,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:02,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:06:02,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:06:02,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:06:02,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:06:02,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:06:02,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:06:02,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:06:02,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:02" (1/1) ... [2021-11-23 17:06:02,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:02,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:02,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:06:02,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:06:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:06:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:06:02,579 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:06:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:06:02,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:06:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:06:02,580 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:06:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:06:02,580 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:06:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:06:02,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:06:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:06:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:06:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:06:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:06:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:06:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:06:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:06:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:06:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:06:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:06:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:06:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:06:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:06:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:06:02,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:06:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:06:02,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:06:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:06:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:06:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:06:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:06:02,711 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:06:02,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:06:03,608 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:06:03,661 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 17:06:03,666 INFO L158 Benchmark]: Toolchain (without parser) took 2078.42ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.2MB in the beginning and 59.5MB in the end (delta: -2.2MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-11-23 17:06:03,667 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 64.2MB in the beginning and 64.2MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:06:03,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.07ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.1MB in the beginning and 77.9MB in the end (delta: -20.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-23 17:06:03,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.00ms. Allocated memory is still 111.1MB. Free memory was 77.9MB in the beginning and 74.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:06:03,670 INFO L158 Benchmark]: Boogie Preprocessor took 57.48ms. Allocated memory is still 111.1MB. Free memory was 74.1MB in the beginning and 70.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:06:03,671 INFO L158 Benchmark]: RCFGBuilder took 1178.74ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 59.5MB in the end (delta: 11.4MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-23 17:06:03,675 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 92.3MB. Free memory was 64.2MB in the beginning and 64.2MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.07ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.1MB in the beginning and 77.9MB in the end (delta: -20.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.00ms. Allocated memory is still 111.1MB. Free memory was 77.9MB in the beginning and 74.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.48ms. Allocated memory is still 111.1MB. Free memory was 74.1MB in the beginning and 70.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1178.74ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 59.5MB in the end (delta: 11.4MB). Peak memory consumption was 18.6MB. 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 17:06:03,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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_d1849007-90d4-49af-86b2-a6cf3660b908/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 fb1091d73aa20044da5f23529d9b458b78a9fc672c28c9226a1c2bddab62484e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:06:06,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:06:06,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:06:06,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:06:06,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:06:06,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:06:06,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:06:06,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:06:06,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:06:06,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:06:06,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:06:06,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:06:06,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:06:06,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:06:06,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:06:06,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:06:06,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:06:06,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:06:06,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:06:06,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:06:06,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:06:06,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:06:06,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:06:06,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:06:06,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:06:06,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:06:06,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:06:06,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:06:06,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:06:06,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:06:06,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:06:06,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:06:06,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:06:06,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:06:06,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:06:06,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:06:06,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:06:06,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:06:06,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:06:06,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:06:06,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:06:06,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:06:06,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:06:06,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:06:06,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:06:06,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:06:06,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:06:06,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:06:06,818 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:06:06,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:06:06,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:06:06,819 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:06:06,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:06:06,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:06:06,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:06:06,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:06:06,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:06:06,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:06:06,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:06:06,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:06:06,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:06:06,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:06:06,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:06:06,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:06:06,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:06:06,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:06:06,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:06:06,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:06:06,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:06:06,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:06:06,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:06:06,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:06,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:06:06,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:06:06,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:06:06,829 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:06:06,829 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:06,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:06:06,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:06:06,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:06:06,842 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_d1849007-90d4-49af-86b2-a6cf3660b908/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb1091d73aa20044da5f23529d9b458b78a9fc672c28c9226a1c2bddab62484e [2021-11-23 17:06:07,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:06:07,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:06:07,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:06:07,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:06:07,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:06:07,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c [2021-11-23 17:06:07,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/a47baf6b8/67e0f326f5e84287822e9321799a0bf0/FLAGe2c5589f6 [2021-11-23 17:06:08,228 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:06:08,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c [2021-11-23 17:06:08,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/a47baf6b8/67e0f326f5e84287822e9321799a0bf0/FLAGe2c5589f6 [2021-11-23 17:06:08,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/data/a47baf6b8/67e0f326f5e84287822e9321799a0bf0 [2021-11-23 17:06:08,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:06:08,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:06:08,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:08,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:06:08,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:06:08,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:08" (1/1) ... [2021-11-23 17:06:08,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b84168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:08, skipping insertion in model container [2021-11-23 17:06:08,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:08" (1/1) ... [2021-11-23 17:06:08,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:06:08,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:06:08,897 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[914,927] [2021-11-23 17:06:09,044 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[7125,7138] [2021-11-23 17:06:09,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:09,176 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:06:09,191 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[914,927] [2021-11-23 17:06:09,216 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_d1849007-90d4-49af-86b2-a6cf3660b908/sv-benchmarks/c/combinations/pc_sfifo_2.cil-2+token_ring.07.cil-1.c[7125,7138] [2021-11-23 17:06:09,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:09,352 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:06:09,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09 WrapperNode [2021-11-23 17:06:09,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:09,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:09,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:06:09,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:06:09,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,472 INFO L137 Inliner]: procedures = 68, calls = 79, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 722 [2021-11-23 17:06:09,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:09,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:06:09,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:06:09,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:06:09,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:06:09,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:06:09,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:06:09,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:06:09,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (1/1) ... [2021-11-23 17:06:09,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:09,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:09,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:06:09,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:06:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:06:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:06:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:06:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-11-23 17:06:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-11-23 17:06:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:06:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:06:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:06:09,656 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:06:09,656 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-11-23 17:06:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-11-23 17:06:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:06:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:06:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:06:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:06:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-11-23 17:06:09,657 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-11-23 17:06:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:06:09,657 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-11-23 17:06:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-11-23 17:06:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-11-23 17:06:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-11-23 17:06:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:06:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:06:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:06:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:06:09,658 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-11-23 17:06:09,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-11-23 17:06:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:06:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:06:09,659 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:06:09,659 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:06:09,805 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:06:09,807 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:06:10,768 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:06:10,781 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:06:10,782 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-23 17:06:10,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:06:10 BoogieIcfgContainer [2021-11-23 17:06:10,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:06:10,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:06:10,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:06:10,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:06:10,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:06:08" (1/3) ... [2021-11-23 17:06:10,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59403977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:06:10, skipping insertion in model container [2021-11-23 17:06:10,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:09" (2/3) ... [2021-11-23 17:06:10,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59403977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:06:10, skipping insertion in model container [2021-11-23 17:06:10,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:06:10" (3/3) ... [2021-11-23 17:06:10,796 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2+token_ring.07.cil-1.c [2021-11-23 17:06:10,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:06:10,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:06:10,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:06:10,876 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 17:06:10,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:06:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 359 states, 306 states have (on average 1.6143790849673203) internal successors, (494), 313 states have internal predecessors, (494), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-23 17:06:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 17:06:10,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:10,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:10,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:06:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1357445742, now seen corresponding path program 1 times [2021-11-23 17:06:10,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:10,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602457061] [2021-11-23 17:06:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:10,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:10,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:11,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:06:11,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:11,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:11,273 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 17:06:11,281 INFO L158 Benchmark]: Toolchain (without parser) took 2763.56ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 47.9MB in the beginning and 94.8MB in the end (delta: -46.9MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,282 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 65.3MB in the beginning and 65.1MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:06:11,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.85ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 57.6MB in the end (delta: -9.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,285 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.19ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 53.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,286 INFO L158 Benchmark]: Boogie Preprocessor took 88.45ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 50.2MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,289 INFO L158 Benchmark]: RCFGBuilder took 1223.36ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 42.1MB in the end (delta: 8.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,295 INFO L158 Benchmark]: TraceAbstraction took 490.13ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 41.7MB in the beginning and 94.8MB in the end (delta: -53.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-11-23 17:06:11,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory was 65.3MB in the beginning and 65.1MB in the end (delta: 136.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.85ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 57.6MB in the end (delta: -9.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.19ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 53.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.45ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 50.2MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1223.36ms. Allocated memory is still 83.9MB. Free memory was 50.2MB in the beginning and 42.1MB in the end (delta: 8.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 490.13ms. Allocated memory was 83.9MB in the beginning and 119.5MB in the end (delta: 35.7MB). Free memory was 41.7MB in the beginning and 94.8MB in the end (delta: -53.1MB). Peak memory consumption was 13.0MB. 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 17:06:11,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1849007-90d4-49af-86b2-a6cf3660b908/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