./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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 a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:28:52,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:28:52,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:28:52,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:28:52,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:28:52,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:28:52,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:28:52,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:28:52,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:28:52,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:28:52,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:28:52,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:28:52,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:28:52,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:28:52,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:28:52,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:28:52,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:28:52,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:28:52,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:28:52,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:28:52,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:28:52,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:28:52,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:28:52,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:28:52,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:28:52,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:28:52,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:28:52,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:28:52,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:28:52,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:28:52,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:28:52,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:28:52,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:28:52,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:28:52,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:28:52,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:28:52,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:28:52,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:28:52,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:28:52,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:28:52,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:28:52,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:28:52,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:28:52,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:28:52,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:28:52,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:28:52,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:28:52,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:28:52,811 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:28:52,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:28:52,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:28:52,812 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:28:52,812 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:28:52,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:28:52,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:28:52,813 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:28:52,813 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:28:52,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:28:52,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:28:52,814 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:28:52,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:28:52,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:28:52,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:28:52,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:28:52,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:28:52,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:28:52,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:28:52,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:28:52,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:28:52,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:28:52,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:28:52,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:28:52,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:28:52,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:28:52,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:52,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:28:52,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:28:52,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:28:52,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:28:52,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:28:52,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:28:52,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:28:52,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:28:52,819 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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-11-23 17:28:53,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:28:53,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:28:53,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:28:53,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:28:53,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:28:53,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-23 17:28:53,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/995b5336c/8440a7cbccf9427ca9b8e655d0b8ede7/FLAG64cd7d591 [2021-11-23 17:28:53,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:28:53,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-23 17:28:53,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/995b5336c/8440a7cbccf9427ca9b8e655d0b8ede7/FLAG64cd7d591 [2021-11-23 17:28:54,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/995b5336c/8440a7cbccf9427ca9b8e655d0b8ede7 [2021-11-23 17:28:54,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:28:54,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:28:54,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:54,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:28:54,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:28:54,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7ca1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54, skipping insertion in model container [2021-11-23 17:28:54,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:28:54,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:28:54,693 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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-23 17:28:54,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:54,706 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:28:54,781 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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-23 17:28:54,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:28:54,823 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:28:54,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54 WrapperNode [2021-11-23 17:28:54,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:54,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:54,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:28:54,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:28:54,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,918 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2021-11-23 17:28:54,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:28:54,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:28:54,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:28:54,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:28:54,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:54,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:28:54,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:28:54,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:28:54,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:28:54,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:54" (1/1) ... [2021-11-23 17:28:55,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:28:55,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:28:55,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:28:55,092 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 17:28:55,093 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 17:28:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:28:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:28:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:28:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:28:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:28:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:28:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:28:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:28:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:28:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:28:55,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:28:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:28:55,278 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:28:55,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:28:55,303 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.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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:28:55,308 INFO L158 Benchmark]: Toolchain (without parser) took 1123.84ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 59.6MB in the end (delta: 8.0MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-23 17:28:55,319 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:55,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.72ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 70.7MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:28:55,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.55ms. Allocated memory is still 102.8MB. Free memory was 70.7MB in the beginning and 68.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:28:55,322 INFO L158 Benchmark]: Boogie Preprocessor took 70.99ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:28:55,323 INFO L158 Benchmark]: RCFGBuilder took 314.05ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 59.6MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:28:55,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 102.8MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.72ms. Allocated memory is still 102.8MB. Free memory was 67.3MB in the beginning and 70.7MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.55ms. Allocated memory is still 102.8MB. Free memory was 70.7MB in the beginning and 68.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.99ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 314.05ms. Allocated memory is still 102.8MB. Free memory was 66.6MB in the beginning and 59.6MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. 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.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:28:55,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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 a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:28:58,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:28:58,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:28:58,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:28:58,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:28:58,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:28:58,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:28:58,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:28:58,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:28:58,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:28:58,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:28:58,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:28:58,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:28:58,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:28:58,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:28:58,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:28:58,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:28:58,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:28:58,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:28:58,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:28:58,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:28:58,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:28:58,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:28:58,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:28:58,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:28:58,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:28:58,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:28:58,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:28:58,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:28:58,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:28:58,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:28:58,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:28:58,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:28:58,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:28:58,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:28:58,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:28:58,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:28:58,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:28:58,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:28:58,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:28:58,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:28:58,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:28:58,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:28:58,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:28:58,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:28:58,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:28:58,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:28:58,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:28:58,213 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:28:58,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:28:58,213 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:28:58,213 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:28:58,213 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:28:58,214 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:28:58,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:28:58,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:28:58,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:28:58,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:28:58,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:28:58,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:28:58,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:28:58,216 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:28:58,216 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:28:58,216 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:28:58,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:28:58,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:28:58,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:28:58,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:28:58,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:28:58,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:28:58,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:28:58,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:28:58,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:28:58,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:28:58,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:28:58,219 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:28:58,219 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:28:58,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:28:58,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:28:58,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:28:58,220 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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-11-23 17:28:58,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:28:58,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:28:58,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:28:58,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:28:58,686 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:28:58,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-23 17:28:58,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/8fffcbd23/c2265c8e6b094117957781660d31695e/FLAG75ef3731a [2021-11-23 17:28:59,466 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:28:59,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-11-23 17:28:59,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/8fffcbd23/c2265c8e6b094117957781660d31695e/FLAG75ef3731a [2021-11-23 17:28:59,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/data/8fffcbd23/c2265c8e6b094117957781660d31695e [2021-11-23 17:28:59,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:28:59,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:28:59,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:28:59,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:28:59,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:28:59,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:59" (1/1) ... [2021-11-23 17:28:59,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe4d30c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:28:59, skipping insertion in model container [2021-11-23 17:28:59,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:28:59" (1/1) ... [2021-11-23 17:28:59,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:28:59,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:29:00,157 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_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-23 17:29:00,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:29:00,174 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:29:00,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-11-23 17:29:00,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:29:00,262 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:29:00,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00 WrapperNode [2021-11-23 17:29:00,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:29:00,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:29:00,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:29:00,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:29:00,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,319 INFO L137 Inliner]: procedures = 130, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2021-11-23 17:29:00,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:29:00,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:29:00,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:29:00,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:29:00,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:29:00,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:29:00,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:29:00,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:29:00,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:29:00" (1/1) ... [2021-11-23 17:29:00,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:29:00,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:29:00,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:29:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:29:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 17:29:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 17:29:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:29:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:29:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:29:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:29:00,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:29:00,635 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:29:00,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:29:00,666 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.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.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:29:00,671 INFO L158 Benchmark]: Toolchain (without parser) took 984.85ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 44.7MB in the end (delta: -1.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-11-23 17:29:00,681 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:29:00,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.17ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 37.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:29:00,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.59ms. Allocated memory is still 65.0MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:29:00,684 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 65.0MB. Free memory was 35.6MB in the beginning and 33.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:29:00,685 INFO L158 Benchmark]: RCFGBuilder took 304.04ms. Allocated memory is still 65.0MB. Free memory was 33.5MB in the beginning and 44.7MB in the end (delta: -11.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-11-23 17:29:00,689 INFO L339 ainManager$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 65.0MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.17ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 37.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.59ms. Allocated memory is still 65.0MB. Free memory was 37.9MB in the beginning and 35.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 65.0MB. Free memory was 35.6MB in the beginning and 33.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.04ms. Allocated memory is still 65.0MB. Free memory was 33.5MB in the beginning and 44.7MB in the end (delta: -11.2MB). Peak memory consumption was 10.9MB. 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.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:29:00,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780bd52d-d288-4ab2-bf5d-84912d5bc56b/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