./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array24_pattern.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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array24_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:34:27,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:34:27,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:34:27,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:34:27,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:34:27,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:34:27,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:34:27,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:34:27,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:34:27,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:34:27,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:34:27,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:34:27,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:34:27,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:34:27,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:34:27,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:34:27,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:34:27,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:34:27,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:34:27,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:34:27,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:34:27,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:34:27,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:34:27,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:34:27,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:34:27,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:34:27,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:34:27,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:34:27,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:34:27,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:34:27,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:34:27,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:34:27,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:34:27,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:34:27,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:34:27,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:34:27,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:34:27,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:34:27,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:34:27,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:34:27,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:34:27,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:34:27,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:34:27,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:34:27,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:34:27,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:34:27,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:34:27,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:34:27,307 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:34:27,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:34:27,308 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:34:27,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:34:27,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:34:27,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:34:27,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:34:27,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:34:27,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:34:27,312 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:34:27,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:34:27,313 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:34:27,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:34:27,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:34:27,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:34:27,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:34:27,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:34:27,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:34:27,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:34:27,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:34:27,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:34:27,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:34:27,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:34:27,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:34:27,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:34:27,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:34:27,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:34:27,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:34:27,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:34:27,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:34:27,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:34:27,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:34:27,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:34:27,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:34:27,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:34:27,320 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2021-11-23 17:34:27,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:34:27,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:34:27,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:34:27,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:34:27,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:34:27,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-23 17:34:27,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/eb164d871/c867bd4fe07e4fcf89e7805594e525b0/FLAG0d8c52f88 [2021-11-23 17:34:28,348 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:34:28,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-23 17:34:28,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/eb164d871/c867bd4fe07e4fcf89e7805594e525b0/FLAG0d8c52f88 [2021-11-23 17:34:28,695 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/eb164d871/c867bd4fe07e4fcf89e7805594e525b0 [2021-11-23 17:34:28,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:34:28,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:34:28,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:34:28,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:34:28,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:34:28,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:34:28" (1/1) ... [2021-11-23 17:34:28,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70279ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:28, skipping insertion in model container [2021-11-23 17:34:28,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:34:28" (1/1) ... [2021-11-23 17:34:28,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:34:28,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:34:28,983 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-23 17:34:29,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:34:29,056 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:34:29,083 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-23 17:34:29,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:34:29,120 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:34:29,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29 WrapperNode [2021-11-23 17:34:29,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:34:29,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:34:29,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:34:29,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:34:29,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,199 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2021-11-23 17:34:29,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:34:29,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:34:29,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:34:29,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:34:29,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:34:29,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:34:29,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:34:29,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:34:29,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:29" (1/1) ... [2021-11-23 17:34:29,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:34:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:34:29,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:34:29,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:34:29,396 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-23 17:34:29,397 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-23 17:34:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:34:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:34:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:34:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:34:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:34:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:34:29,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:34:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:34:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:34:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:34:29,483 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:34:29,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:34:29,685 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:34:29,722 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 17:34:29,727 INFO L158 Benchmark]: Toolchain (without parser) took 1025.88ms. Allocated memory is still 98.6MB. Free memory was 56.0MB in the beginning and 55.9MB in the end (delta: 55.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:29,728 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:29,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.41ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 72.1MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:34:29,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.49ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:34:29,731 INFO L158 Benchmark]: Boogie Preprocessor took 72.93ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:29,732 INFO L158 Benchmark]: RCFGBuilder took 445.11ms. Allocated memory is still 98.6MB. Free memory was 68.8MB in the beginning and 55.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:34:29,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 98.6MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.41ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 72.1MB in the end (delta: -16.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.49ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.93ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 69.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 445.11ms. Allocated memory is still 98.6MB. Free memory was 68.8MB in the beginning and 55.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. 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 17:34:29,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array24_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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 b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:34:32,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:34:32,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:34:32,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:34:32,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:34:32,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:34:32,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:34:32,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:34:32,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:34:32,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:34:32,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:34:32,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:34:32,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:34:32,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:34:32,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:34:32,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:34:32,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:34:32,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:34:32,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:34:32,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:34:32,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:34:32,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:34:32,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:34:32,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:34:32,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:34:32,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:34:32,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:34:32,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:34:32,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:34:32,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:34:32,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:34:32,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:34:32,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:34:32,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:34:32,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:34:32,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:34:32,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:34:32,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:34:32,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:34:32,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:34:32,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:34:32,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:34:32,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:34:32,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:34:32,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:34:32,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:34:32,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:34:32,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:34:32,977 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:34:32,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:34:32,978 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:34:32,978 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:34:32,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:34:32,980 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:34:32,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:34:32,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:34:32,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:34:32,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:34:32,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:34:32,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:34:32,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:34:32,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:34:32,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:34:32,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:34:32,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:34:32,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:34:32,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:34:32,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:34:32,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:34:32,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:34:32,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:34:32,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:34:32,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:34:32,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:34:32,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:34:32,989 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:34:32,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:34:32,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:34:32,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:34:32,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:34:32,991 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b41c571dabcbc4670dde65107f8da5b879f13435b678b4e9a9cdcc7ef0066cf6 [2021-11-23 17:34:33,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:34:33,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:34:33,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:34:33,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:34:33,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:34:33,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-23 17:34:33,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/56d77e88c/acd2688715254d1a822cd4bf2bc51a8a/FLAG6e694b89b [2021-11-23 17:34:34,137 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:34:34,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c [2021-11-23 17:34:34,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/56d77e88c/acd2688715254d1a822cd4bf2bc51a8a/FLAG6e694b89b [2021-11-23 17:34:34,479 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/data/56d77e88c/acd2688715254d1a822cd4bf2bc51a8a [2021-11-23 17:34:34,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:34:34,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:34:34,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:34:34,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:34:34,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:34:34,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:34,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bad2f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34, skipping insertion in model container [2021-11-23 17:34:34,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:34,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:34:34,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:34:34,724 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-23 17:34:34,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:34:34,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:34:34,816 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_d1afe3fd-7580-49d9-a250-ad4bc5b336da/sv-benchmarks/c/array-patterns/array24_pattern.c[1359,1372] [2021-11-23 17:34:34,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:34:34,885 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:34:34,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34 WrapperNode [2021-11-23 17:34:34,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:34:34,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:34:34,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:34:34,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:34:34,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:34,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:34,995 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2021-11-23 17:34:34,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:34:34,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:34:34,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:34:34,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:34:35,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:34:35,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:34:35,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:34:35,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:34:35,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (1/1) ... [2021-11-23 17:34:35,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:34:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:34:35,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:34:35,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-23 17:34:35,192 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-23 17:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:34:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:34:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:34:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:34:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:34:35,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:34:35,307 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:34:35,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:34:35,886 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:34:35,893 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:34:35,894 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 17:34:35,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:34:35 BoogieIcfgContainer [2021-11-23 17:34:35,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:34:35,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:34:35,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:34:35,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:34:35,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:34:34" (1/3) ... [2021-11-23 17:34:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a8b926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:34:35, skipping insertion in model container [2021-11-23 17:34:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:34:34" (2/3) ... [2021-11-23 17:34:35,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a8b926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:34:35, skipping insertion in model container [2021-11-23 17:34:35,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:34:35" (3/3) ... [2021-11-23 17:34:35,907 INFO L111 eAbstractionObserver]: Analyzing ICFG array24_pattern.c [2021-11-23 17:34:35,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:34:35,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:34:36,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:34:36,049 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 17:34:36,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:34:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 17:34:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:34:36,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:34:36,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:34:36,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:34:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:34:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2021-11-23 17:34:36,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:34:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944937737] [2021-11-23 17:34:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:34:36,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:34:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:34:36,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:34:36,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:34:36,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:34:36,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:34:36,376 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 17:34:36,387 INFO L158 Benchmark]: Toolchain (without parser) took 1901.03ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 28.5MB in the beginning and 49.3MB in the end (delta: -20.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:36,389 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:36,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.62ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 28.3MB in the beginning and 56.4MB in the end (delta: -28.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-23 17:34:36,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.12ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 54.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:34:36,394 INFO L158 Benchmark]: Boogie Preprocessor took 59.88ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 53.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:36,396 INFO L158 Benchmark]: RCFGBuilder took 829.63ms. Allocated memory is still 73.4MB. Free memory was 53.0MB in the beginning and 40.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:34:36,400 INFO L158 Benchmark]: TraceAbstraction took 484.84ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 49.3MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:34:36,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 52.4MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.62ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 28.3MB in the beginning and 56.4MB in the end (delta: -28.1MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.12ms. Allocated memory is still 73.4MB. Free memory was 56.4MB in the beginning and 54.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.88ms. Allocated memory is still 73.4MB. Free memory was 54.7MB in the beginning and 53.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 829.63ms. Allocated memory is still 73.4MB. Free memory was 53.0MB in the beginning and 40.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 484.84ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 49.3MB in the end (delta: -8.9MB). 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 17:34:36,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1afe3fd-7580-49d9-a250-ad4bc5b336da/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