./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.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_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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_7a5772e2-74bc-419f-9935-44fa558fad19/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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:50,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:50,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:50,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:50,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:50,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:50,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:50,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:50,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:50,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:50,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:50,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:50,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:50,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:50,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:50,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:50,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:50,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:50,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:50,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:50,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:50,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:50,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:50,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:50,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:50,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:50,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:50,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:50,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:50,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:50,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:50,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:50,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:50,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:50,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:50,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:50,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:50,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:50,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:50,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:50,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:50,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:48:50,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:50,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:50,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:50,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:50,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:50,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:50,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:50,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:50,331 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:50,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:48:50,332 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:50,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:50,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:48:50,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:48:50,333 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:50,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:48:50,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:48:50,334 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:48:50,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:50,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:50,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:48:50,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:50,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:50,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:50,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:50,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:50,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:50,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:50,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:50,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:50,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:50,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:50,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:50,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:50,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:50,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:50,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:48:50,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:48:50,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:50,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:50,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:50,342 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_7a5772e2-74bc-419f-9935-44fa558fad19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2021-11-23 16:48:50,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:50,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:50,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:50,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:50,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:50,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-23 16:48:50,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/411601939/8e69384de65349038289a1228d02bc3e/FLAGfd9c635ad [2021-11-23 16:48:51,199 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:51,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-23 16:48:51,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/411601939/8e69384de65349038289a1228d02bc3e/FLAGfd9c635ad [2021-11-23 16:48:51,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/411601939/8e69384de65349038289a1228d02bc3e [2021-11-23 16:48:51,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:51,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:51,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:51,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:51,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:51,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:51" (1/1) ... [2021-11-23 16:48:51,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68497c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:51, skipping insertion in model container [2021-11-23 16:48:51,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:51" (1/1) ... [2021-11-23 16:48:51,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:51,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:51,823 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_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-23 16:48:51,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:51,981 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:51,993 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_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-23 16:48:52,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:52,090 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:52,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52 WrapperNode [2021-11-23 16:48:52,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:52,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:52,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:52,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:52,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,184 INFO L137 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 684 [2021-11-23 16:48:52,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:52,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:52,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:52,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:52,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:52,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:52,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:52,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:52,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:52" (1/1) ... [2021-11-23 16:48:52,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:52,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:52,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:52,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 16:48:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 16:48:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 16:48:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:48:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:48:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 16:48:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 16:48:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 16:48:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 16:48:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:48:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 16:48:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 16:48:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:52,460 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:52,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:53,342 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:53,415 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 16:48:53,421 INFO L158 Benchmark]: Toolchain (without parser) took 1856.29ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.2MB in the beginning and 64.8MB in the end (delta: -16.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-23 16:48:53,421 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:53,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.35ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.1MB in the beginning and 72.4MB in the end (delta: -24.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:48:53,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.69ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 68.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:53,426 INFO L158 Benchmark]: Boogie Preprocessor took 67.08ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:48:53,427 INFO L158 Benchmark]: RCFGBuilder took 1163.36ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 64.8MB in the end (delta: 499.5kB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2021-11-23 16:48:53,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.35ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.1MB in the beginning and 72.4MB in the end (delta: -24.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.69ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 68.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.08ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1163.36ms. Allocated memory is still 104.9MB. Free memory was 65.3MB in the beginning and 64.8MB in the end (delta: 499.5kB). Peak memory consumption was 27.6MB. 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 16:48:53,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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_7a5772e2-74bc-419f-9935-44fa558fad19/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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:56,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:56,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:56,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:56,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:56,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:56,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:56,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:56,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:56,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:56,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:56,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:56,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:56,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:56,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:56,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:56,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:56,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:56,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:56,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:56,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:56,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:56,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:56,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:56,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:56,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:56,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:56,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:56,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:56,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:56,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:56,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:56,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:56,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:56,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:56,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:56,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:56,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:56,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:56,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:56,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:56,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:48:56,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:56,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:56,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:56,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:56,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:56,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:56,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:56,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:56,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:56,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:56,223 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:56,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:56,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:56,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:56,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:56,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:56,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:56,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:56,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:56,227 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:48:56,227 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:48:56,227 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:48:56,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:56,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:56,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:56,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:56,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:56,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:48:56,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:56,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:56,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:56,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:56,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:56,231 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:48:56,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:56,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:56,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:56,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:56,232 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_7a5772e2-74bc-419f-9935-44fa558fad19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2021-11-23 16:48:56,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:56,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:56,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:56,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:56,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:56,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-23 16:48:56,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/d8c1025c1/d96b86332fb54b148c406052d5a8cfa7/FLAGd005a232f [2021-11-23 16:48:57,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:57,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2021-11-23 16:48:57,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/d8c1025c1/d96b86332fb54b148c406052d5a8cfa7/FLAGd005a232f [2021-11-23 16:48:57,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/data/d8c1025c1/d96b86332fb54b148c406052d5a8cfa7 [2021-11-23 16:48:57,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:57,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:57,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:57,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:57,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:57,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:57" (1/1) ... [2021-11-23 16:48:57,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e640156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:57, skipping insertion in model container [2021-11-23 16:48:57,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:57" (1/1) ... [2021-11-23 16:48:57,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:57,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:57,936 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_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-23 16:48:58,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:58,140 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:58,153 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_7a5772e2-74bc-419f-9935-44fa558fad19/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2021-11-23 16:48:58,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:58,241 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:58,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58 WrapperNode [2021-11-23 16:48:58,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:58,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:58,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:58,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:58,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,361 INFO L137 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 658 [2021-11-23 16:48:58,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:58,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:58,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:58,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:58,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:58,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:58,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:58,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:58,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (1/1) ... [2021-11-23 16:48:58,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:58,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:58,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:48:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-23 16:48:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-23 16:48:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-23 16:48:58,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-23 16:48:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-23 16:48:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-23 16:48:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 16:48:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 16:48:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-23 16:48:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-23 16:48:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-23 16:48:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-23 16:48:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-23 16:48:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-23 16:48:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:58,693 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:58,694 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:59,619 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:48:59,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:48:59,630 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-23 16:48:59,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:59 BoogieIcfgContainer [2021-11-23 16:48:59,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:48:59,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:48:59,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:48:59,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:48:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:48:57" (1/3) ... [2021-11-23 16:48:59,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c274280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:59, skipping insertion in model container [2021-11-23 16:48:59,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:58" (2/3) ... [2021-11-23 16:48:59,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c274280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:48:59, skipping insertion in model container [2021-11-23 16:48:59,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:48:59" (3/3) ... [2021-11-23 16:48:59,641 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2021-11-23 16:48:59,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:48:59,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:48:59,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:48:59,707 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 16:48:59,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:48:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 281 states have (on average 1.6583629893238434) internal successors, (466), 285 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-23 16:48:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-23 16:48:59,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:59,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:59,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:59,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1520697994, now seen corresponding path program 1 times [2021-11-23 16:48:59,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:59,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137451436] [2021-11-23 16:48:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:59,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:59,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:59,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:59,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:48:59,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:00,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:00,062 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 16:49:00,068 INFO L158 Benchmark]: Toolchain (without parser) took 2363.89ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.9MB in the beginning and 33.9MB in the end (delta: -11.0MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-11-23 16:49:00,069 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:49:00,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.40ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.7MB in the beginning and 37.1MB in the end (delta: -14.4MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-11-23 16:49:00,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.78ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 33.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:49:00,071 INFO L158 Benchmark]: Boogie Preprocessor took 121.76ms. Allocated memory is still 60.8MB. Free memory was 33.7MB in the beginning and 30.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:49:00,072 INFO L158 Benchmark]: RCFGBuilder took 1148.41ms. Allocated memory is still 60.8MB. Free memory was 30.4MB in the beginning and 28.7MB in the end (delta: 1.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-23 16:49:00,072 INFO L158 Benchmark]: TraceAbstraction took 431.62ms. Allocated memory is still 60.8MB. Free memory was 28.4MB in the beginning and 33.9MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:49:00,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory is still 29.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.40ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.7MB in the beginning and 37.1MB in the end (delta: -14.4MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.78ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 33.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.76ms. Allocated memory is still 60.8MB. Free memory was 33.7MB in the beginning and 30.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1148.41ms. Allocated memory is still 60.8MB. Free memory was 30.4MB in the beginning and 28.7MB in the end (delta: 1.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 431.62ms. Allocated memory is still 60.8MB. Free memory was 28.4MB in the beginning and 33.9MB in the end (delta: -5.4MB). There was no memory consumed. 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 16:49:00,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a5772e2-74bc-419f-9935-44fa558fad19/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