./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum20.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_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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_b8ca8105-83a4-46f0-b522-99c0b164423a/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 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:57:43,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:57:43,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:57:43,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:57:43,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:57:43,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:57:43,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:57:43,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:57:43,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:57:43,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:57:43,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:57:43,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:57:43,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:57:43,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:57:43,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:57:43,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:57:43,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:57:43,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:57:43,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:57:43,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:57:43,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:57:43,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:57:43,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:57:43,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:57:43,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:57:43,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:57:43,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:57:43,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:57:43,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:57:43,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:57:43,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:57:43,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:57:43,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:57:43,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:57:43,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:57:43,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:57:43,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:57:43,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:57:43,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:57:43,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:57:43,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:57:43,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:57:43,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:57:43,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:57:43,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:57:43,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:57:43,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:57:43,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:57:43,236 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:57:43,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:57:43,236 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:57:43,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:57:43,238 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:57:43,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:57:43,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:57:43,239 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:57:43,239 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:57:43,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:57:43,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:57:43,240 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:57:43,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:57:43,241 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:57:43,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:57:43,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:57:43,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:57:43,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:57:43,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:57:43,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:57:43,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:57:43,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:57:43,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:57:43,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:57:43,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:57:43,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:57:43,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:43,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:57:43,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:57:43,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:57:43,246 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:57:43,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:57:43,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:57:43,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:57:43,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:57:43,248 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_b8ca8105-83a4-46f0-b522-99c0b164423a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a [2021-11-23 16:57:43,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:57:43,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:57:43,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:57:43,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:57:43,560 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:57:43,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-11-23 16:57:43,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/442f2e369/d7e4f4d86b5c45d79b391678b9c4de1c/FLAG35d796d67 [2021-11-23 16:57:44,033 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:57:44,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-11-23 16:57:44,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/442f2e369/d7e4f4d86b5c45d79b391678b9c4de1c/FLAG35d796d67 [2021-11-23 16:57:44,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/442f2e369/d7e4f4d86b5c45d79b391678b9c4de1c [2021-11-23 16:57:44,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:57:44,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:57:44,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:44,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:57:44,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:57:44,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5430fe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44, skipping insertion in model container [2021-11-23 16:57:44,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:57:44,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:57:44,728 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_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-11-23 16:57:44,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:44,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:57:44,778 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_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-11-23 16:57:44,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:44,795 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:57:44,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44 WrapperNode [2021-11-23 16:57:44,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:44,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:44,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:57:44,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:57:44,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,850 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-11-23 16:57:44,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:44,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:57:44,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:57:44,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:57:44,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:57:44,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:57:44,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:57:44,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:57:44,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:44" (1/1) ... [2021-11-23 16:57:44,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:57:44,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:57:44,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:57:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:57:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:57:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:57:44,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:57:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:57:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:57:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:57:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-11-23 16:57:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-11-23 16:57:44,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:57:45,054 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:57:45,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:57:45,206 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:57:45,228 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:57:45,232 INFO L158 Benchmark]: Toolchain (without parser) took 802.58ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 48.3MB in the end (delta: 3.5MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-11-23 16:57:45,233 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 68.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:45,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.79ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 62.3MB in the end (delta: -10.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:57:45,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.83ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 60.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:45,236 INFO L158 Benchmark]: Boogie Preprocessor took 45.46ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 59.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:57:45,236 INFO L158 Benchmark]: RCFGBuilder took 332.71ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 48.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:57:45,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 68.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.79ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 62.3MB in the end (delta: -10.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.83ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 60.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.46ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 59.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.71ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 48.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:57:45,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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_b8ca8105-83a4-46f0-b522-99c0b164423a/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 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:57:47,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:57:47,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:57:47,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:57:47,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:57:47,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:57:47,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:57:47,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:57:47,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:57:47,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:57:47,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:57:47,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:57:47,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:57:47,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:57:47,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:57:47,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:57:47,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:57:47,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:57:47,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:57:47,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:57:47,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:57:47,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:57:47,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:57:47,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:57:47,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:57:47,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:57:47,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:57:47,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:57:47,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:57:47,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:57:47,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:57:47,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:57:47,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:57:47,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:57:47,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:57:47,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:57:47,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:57:47,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:57:47,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:57:47,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:57:47,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:57:47,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:57:47,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:57:47,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:57:47,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:57:47,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:57:47,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:57:47,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:57:47,877 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:57:47,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:57:47,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:57:47,878 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:57:47,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:57:47,879 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:57:47,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:57:47,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:57:47,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:57:47,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:57:47,883 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:57:47,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:57:47,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:57:47,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:57:47,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:57:47,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:57:47,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:57:47,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:57:47,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:47,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:57:47,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:57:47,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:57:47,886 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:57:47,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:57:47,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:57:47,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:57:47,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:57:47,887 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_b8ca8105-83a4-46f0-b522-99c0b164423a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a [2021-11-23 16:57:48,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:57:48,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:57:48,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:57:48,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:57:48,333 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:57:48,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-11-23 16:57:48,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/36b407cf1/071c554104384960bae02178dc3aa7e4/FLAG4ef3800d5 [2021-11-23 16:57:48,999 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:57:48,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-11-23 16:57:49,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/36b407cf1/071c554104384960bae02178dc3aa7e4/FLAG4ef3800d5 [2021-11-23 16:57:49,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/data/36b407cf1/071c554104384960bae02178dc3aa7e4 [2021-11-23 16:57:49,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:57:49,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:57:49,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:49,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:57:49,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:57:49,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f142a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49, skipping insertion in model container [2021-11-23 16:57:49,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:57:49,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:57:49,551 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_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-11-23 16:57:49,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:49,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:57:49,654 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_b8ca8105-83a4-46f0-b522-99c0b164423a/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-11-23 16:57:49,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:57:49,670 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:57:49,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49 WrapperNode [2021-11-23 16:57:49,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:57:49,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:49,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:57:49,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:57:49,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,718 INFO L137 Inliner]: procedures = 19, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2021-11-23 16:57:49,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:57:49,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:57:49,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:57:49,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:57:49,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:57:49,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:57:49,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:57:49,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:57:49,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (1/1) ... [2021-11-23 16:57:49,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:57:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:57:49,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:57:49,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:57:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:57:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:57:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:57:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:57:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:57:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:57:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-11-23 16:57:49,863 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-11-23 16:57:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:57:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:57:49,946 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:57:49,948 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:57:50,591 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:57:50,598 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:57:50,599 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 16:57:50,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:57:50 BoogieIcfgContainer [2021-11-23 16:57:50,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:57:50,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:57:50,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:57:50,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:57:50,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:57:49" (1/3) ... [2021-11-23 16:57:50,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b87cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:57:50, skipping insertion in model container [2021-11-23 16:57:50,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:57:49" (2/3) ... [2021-11-23 16:57:50,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b87cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:57:50, skipping insertion in model container [2021-11-23 16:57:50,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:57:50" (3/3) ... [2021-11-23 16:57:50,610 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2021-11-23 16:57:50,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:57:50,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:57:50,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:57:50,678 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:57:50,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:57:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 16:57:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 16:57:50,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:57:50,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:57:50,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:57:50,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:57:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2021-11-23 16:57:50,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:57:50,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459782799] [2021-11-23 16:57:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:57:50,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:57:50,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:57:50,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:57:50,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:57:50,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:57:50,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:57:50,982 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:57:50,988 INFO L158 Benchmark]: Toolchain (without parser) took 1628.66ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 35.0MB in the beginning and 50.7MB in the end (delta: -15.7MB). Peak memory consumption was 527.2kB. Max. memory is 16.1GB. [2021-11-23 16:57:50,989 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:50,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.57ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 34.8MB in the beginning and 56.7MB in the end (delta: -21.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:57:50,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.35ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:50,994 INFO L158 Benchmark]: Boogie Preprocessor took 56.44ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 53.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:57:50,996 INFO L158 Benchmark]: RCFGBuilder took 822.69ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 42.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:57:50,998 INFO L158 Benchmark]: TraceAbstraction took 381.10ms. Allocated memory is still 73.4MB. Free memory was 41.9MB in the beginning and 50.7MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:57:51,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.57ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 34.8MB in the beginning and 56.7MB in the end (delta: -21.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.35ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.44ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 53.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 822.69ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 42.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 381.10ms. Allocated memory is still 73.4MB. Free memory was 41.9MB in the beginning and 50.7MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:57:51,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8ca8105-83a4-46f0-b522-99c0b164423a/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