./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.i --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_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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_2ee8d84c-e009-4ca3-9772-35da6afff615/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 ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:27:48,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:27:48,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:27:48,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:27:48,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:27:48,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:27:48,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:27:48,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:27:48,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:27:48,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:27:48,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:27:48,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:27:48,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:27:48,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:27:48,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:27:48,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:27:48,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:27:48,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:27:48,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:27:48,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:27:48,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:27:48,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:27:48,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:27:48,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:27:48,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:27:48,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:27:48,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:27:48,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:27:48,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:27:48,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:27:48,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:27:48,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:27:48,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:27:48,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:27:48,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:27:48,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:27:48,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:27:48,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:27:48,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:27:48,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:27:48,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:27:48,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:27:48,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:27:48,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:27:48,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:27:48,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:27:48,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:27:48,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:27:48,308 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:27:48,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:27:48,309 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:27:48,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:27:48,310 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:27:48,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:27:48,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:27:48,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:27:48,311 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:27:48,311 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:27:48,311 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:27:48,311 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:27:48,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:27:48,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:27:48,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:27:48,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:27:48,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:27:48,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:27:48,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:27:48,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:27:48,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:27:48,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:27:48,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:27:48,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:27:48,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:27:48,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:27:48,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:27:48,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:27:48,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:27:48,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:27:48,321 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:27:48,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:27:48,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:27:48,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:27:48,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:27:48,323 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_2ee8d84c-e009-4ca3-9772-35da6afff615/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2021-11-23 17:27:48,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:27:48,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:27:48,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:27:48,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:27:48,754 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:27:48,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-11-23 17:27:48,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/ddd66ac94/2bae3d3bfa4840e2859d5d48825a298e/FLAGd410690df [2021-11-23 17:27:49,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:27:49,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-11-23 17:27:49,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/ddd66ac94/2bae3d3bfa4840e2859d5d48825a298e/FLAGd410690df [2021-11-23 17:27:49,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/ddd66ac94/2bae3d3bfa4840e2859d5d48825a298e [2021-11-23 17:27:49,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:27:49,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:27:49,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:27:49,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:27:49,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:27:49,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:27:49" (1/1) ... [2021-11-23 17:27:49,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af4464e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:49, skipping insertion in model container [2021-11-23 17:27:49,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:27:49" (1/1) ... [2021-11-23 17:27:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:27:49,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:27:50,017 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_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2021-11-23 17:27:50,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:27:50,205 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:27:50,219 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_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2021-11-23 17:27:50,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:27:50,304 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:27:50,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50 WrapperNode [2021-11-23 17:27:50,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:27:50,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:27:50,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:27:50,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:27:50,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,390 INFO L137 Inliner]: procedures = 126, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-11-23 17:27:50,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:27:50,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:27:50,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:27:50,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:27:50,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:27:50,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:27:50,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:27:50,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:27:50,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:50" (1/1) ... [2021-11-23 17:27:50,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:27:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:27:50,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:27:50,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:27:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-11-23 17:27:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-11-23 17:27:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:27:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 17:27:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 17:27:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:27:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-11-23 17:27:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-11-23 17:27:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:27:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:27:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:27:50,688 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:27:50,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:27:50,838 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:27:50,862 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:27:50,868 INFO L158 Benchmark]: Toolchain (without parser) took 1150.58ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 52.5MB in the beginning and 75.1MB in the end (delta: -22.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-23 17:27:50,869 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 14.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:27:50,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 588.34ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 52.3MB in the beginning and 90.9MB in the end (delta: -38.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:27:50,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.37ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:27:50,872 INFO L158 Benchmark]: Boogie Preprocessor took 51.09ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:27:50,873 INFO L158 Benchmark]: RCFGBuilder took 420.90ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 75.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:27:50,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 14.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 588.34ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 52.3MB in the beginning and 90.9MB in the end (delta: -38.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.37ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.09ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 87.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.90ms. Allocated memory is still 121.6MB. Free memory was 87.1MB in the beginning and 75.1MB in the end (delta: 12.0MB). 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 17:27:50,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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_2ee8d84c-e009-4ca3-9772-35da6afff615/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 ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:27:53,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:27:53,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:27:53,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:27:53,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:27:53,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:27:53,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:27:53,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:27:53,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:27:53,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:27:53,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:27:53,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:27:53,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:27:53,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:27:53,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:27:53,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:27:53,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:27:53,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:27:53,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:27:53,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:27:53,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:27:53,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:27:54,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:27:54,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:27:54,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:27:54,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:27:54,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:27:54,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:27:54,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:27:54,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:27:54,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:27:54,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:27:54,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:27:54,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:27:54,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:27:54,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:27:54,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:27:54,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:27:54,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:27:54,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:27:54,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:27:54,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:27:54,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:27:54,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:27:54,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:27:54,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:27:54,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:27:54,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:27:54,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:27:54,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:27:54,072 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:27:54,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:27:54,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:27:54,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:27:54,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:27:54,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:27:54,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:27:54,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:27:54,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:27:54,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:27:54,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:27:54,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:27:54,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:27:54,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:27:54,077 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:27:54,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:27:54,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:27:54,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:27:54,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:27:54,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:27:54,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:27:54,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:27:54,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:27:54,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:27:54,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:27:54,080 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:27:54,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:27:54,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:27:54,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:27:54,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:27:54,081 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_2ee8d84c-e009-4ca3-9772-35da6afff615/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2021-11-23 17:27:54,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:27:54,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:27:54,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:27:54,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:27:54,657 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:27:54,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-11-23 17:27:54,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/8aea1df35/70d4b6344b5b4848b987945c4639db7f/FLAGfc12c4d70 [2021-11-23 17:27:55,497 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:27:55,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i [2021-11-23 17:27:55,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/8aea1df35/70d4b6344b5b4848b987945c4639db7f/FLAGfc12c4d70 [2021-11-23 17:27:55,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/data/8aea1df35/70d4b6344b5b4848b987945c4639db7f [2021-11-23 17:27:55,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:27:55,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:27:55,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:27:55,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:27:55,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:27:55,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:27:55" (1/1) ... [2021-11-23 17:27:55,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fbb5ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:55, skipping insertion in model container [2021-11-23 17:27:55,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:27:55" (1/1) ... [2021-11-23 17:27:55,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:27:55,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:27:56,100 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_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2021-11-23 17:27:56,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:27:56,355 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:27:56,372 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_2ee8d84c-e009-4ca3-9772-35da6afff615/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2021-11-23 17:27:56,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:27:56,484 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:27:56,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56 WrapperNode [2021-11-23 17:27:56,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:27:56,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:27:56,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:27:56,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:27:56,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,572 INFO L137 Inliner]: procedures = 127, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2021-11-23 17:27:56,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:27:56,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:27:56,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:27:56,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:27:56,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:27:56,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:27:56,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:27:56,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:27:56,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (1/1) ... [2021-11-23 17:27:56,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:27:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:27:56,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:27:56,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:27:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-11-23 17:27:56,735 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-11-23 17:27:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:27:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 17:27:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 17:27:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:27:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-11-23 17:27:56,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-11-23 17:27:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:27:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:27:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:27:56,938 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:27:56,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:27:57,171 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:27:57,179 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:27:57,179 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:27:57,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:27:57 BoogieIcfgContainer [2021-11-23 17:27:57,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:27:57,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:27:57,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:27:57,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:27:57,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:27:55" (1/3) ... [2021-11-23 17:27:57,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc46f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:27:57, skipping insertion in model container [2021-11-23 17:27:57,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:27:56" (2/3) ... [2021-11-23 17:27:57,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc46f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:27:57, skipping insertion in model container [2021-11-23 17:27:57,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:27:57" (3/3) ... [2021-11-23 17:27:57,190 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2021-11-23 17:27:57,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:27:57,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:27:57,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:27:57,264 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 17:27:57,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:27:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 27 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 17:27:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 17:27:57,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:27:57,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:27:57,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:27:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:27:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -433137914, now seen corresponding path program 1 times [2021-11-23 17:27:57,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:27:57,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312895874] [2021-11-23 17:27:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:27:57,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:27:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:27:57,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:27:57,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:27:57,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:27:57,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:27:57,589 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 17:27:57,599 INFO L158 Benchmark]: Toolchain (without parser) took 1872.73ms. Allocated memory is still 77.6MB. Free memory was 42.0MB in the beginning and 50.7MB in the end (delta: -8.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:27:57,601 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:27:57,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.17ms. Allocated memory is still 77.6MB. Free memory was 41.8MB in the beginning and 47.7MB in the end (delta: -5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:27:57,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.67ms. Allocated memory is still 77.6MB. Free memory was 47.7MB in the beginning and 45.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:27:57,606 INFO L158 Benchmark]: Boogie Preprocessor took 50.67ms. Allocated memory is still 77.6MB. Free memory was 45.6MB in the beginning and 44.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:27:57,607 INFO L158 Benchmark]: RCFGBuilder took 541.32ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 59.6MB in the end (delta: -15.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-11-23 17:27:57,613 INFO L158 Benchmark]: TraceAbstraction took 412.90ms. Allocated memory is still 77.6MB. Free memory was 59.3MB in the beginning and 50.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:27:57,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.17ms. Allocated memory is still 77.6MB. Free memory was 41.8MB in the beginning and 47.7MB in the end (delta: -5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.67ms. Allocated memory is still 77.6MB. Free memory was 47.7MB in the beginning and 45.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.67ms. Allocated memory is still 77.6MB. Free memory was 45.6MB in the beginning and 44.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.32ms. Allocated memory is still 77.6MB. Free memory was 44.1MB in the beginning and 59.6MB in the end (delta: -15.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 412.90ms. Allocated memory is still 77.6MB. Free memory was 59.3MB in the beginning and 50.7MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. 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 17:27:57,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee8d84c-e009-4ca3-9772-35da6afff615/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