./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfdde8b1798318c3bb26b76a748741913b280952 ................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:03:12,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:03:12,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:03:12,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:03:12,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:03:12,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:03:12,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:03:12,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:03:12,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:03:12,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:03:12,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:03:12,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:03:12,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:03:12,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:03:12,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:03:12,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:03:12,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:03:12,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:03:12,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:03:12,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:03:12,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:03:12,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:03:12,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:03:12,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:03:12,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:03:12,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:03:12,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:03:12,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:03:12,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:03:12,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:03:12,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:03:12,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:03:12,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:03:12,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:03:12,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:03:12,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:03:12,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:03:12,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:03:12,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:03:12,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:03:12,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:03:12,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:03:12,838 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:03:12,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:03:12,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:03:12,839 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:03:12,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:03:12,839 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:03:12,839 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:03:12,840 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:03:12,840 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:03:12,840 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:03:12,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:03:12,840 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:03:12,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:03:12,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:03:12,841 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:03:12,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:03:12,841 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:03:12,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:03:12,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:03:12,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:03:12,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:03:12,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:03:12,844 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan 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(__VERIFIER_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 -> cfdde8b1798318c3bb26b76a748741913b280952 [2019-12-07 21:03:12,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:03:12,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:03:12,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:03:12,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:03:12,961 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:03:12,961 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-12-07 21:03:12,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/data/dabcf2dd4/e25a1c35bcd14d2186d3b2001c5f2293/FLAGa922d17dc [2019-12-07 21:03:13,368 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:03:13,369 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2019-12-07 21:03:13,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/data/dabcf2dd4/e25a1c35bcd14d2186d3b2001c5f2293/FLAGa922d17dc [2019-12-07 21:03:13,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/data/dabcf2dd4/e25a1c35bcd14d2186d3b2001c5f2293 [2019-12-07 21:03:13,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:03:13,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:03:13,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:13,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:03:13,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:03:13,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd5798b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13, skipping insertion in model container [2019-12-07 21:03:13,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:03:13,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:03:13,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:13,660 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:03:13,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:13,720 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:03:13,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13 WrapperNode [2019-12-07 21:03:13,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:13,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:13,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:03:13,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:03:13,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:13,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:03:13,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:03:13,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:03:13,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... [2019-12-07 21:03:13,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:03:13,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:03:13,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:03:13,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:03:13,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:03:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:03:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:03:14,127 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:03:14,127 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-12-07 21:03:14,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:14 BoogieIcfgContainer [2019-12-07 21:03:14,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:03:14,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:03:14,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:03:14,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:03:14,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:03:13" (1/3) ... [2019-12-07 21:03:14,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30949ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:14, skipping insertion in model container [2019-12-07 21:03:14,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:13" (2/3) ... [2019-12-07 21:03:14,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30949ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:14, skipping insertion in model container [2019-12-07 21:03:14,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:14" (3/3) ... [2019-12-07 21:03:14,133 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2019-12-07 21:03:14,139 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:03:14,144 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:03:14,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:03:14,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:03:14,166 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:03:14,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:03:14,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:03:14,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:03:14,166 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:03:14,166 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:03:14,166 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:03:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 21:03:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 21:03:14,179 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:14,179 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:14,179 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash 73302926, now seen corresponding path program 1 times [2019-12-07 21:03:14,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:14,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200060985] [2019-12-07 21:03:14,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:03:14,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200060985] [2019-12-07 21:03:14,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:14,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:03:14,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473895022] [2019-12-07 21:03:14,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:03:14,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:14,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:03:14,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:03:14,319 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-12-07 21:03:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:14,353 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2019-12-07 21:03:14,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:03:14,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 21:03:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:14,360 INFO L225 Difference]: With dead ends: 20 [2019-12-07 21:03:14,360 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 21:03:14,363 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:03:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 21:03:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 21:03:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 21:03:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 21:03:14,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-12-07 21:03:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:14,385 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 21:03:14,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:03:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 21:03:14,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 21:03:14,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 21:03:14,416 INFO L242 CegarLoopResult]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-12-07 21:03:14,416 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 21:03:14,416 INFO L242 CegarLoopResult]: At program point L631(lines 613 632) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-12-07 21:03:14,416 INFO L242 CegarLoopResult]: At program point L607-2(lines 607 610) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-12-07 21:03:14,417 INFO L246 CegarLoopResult]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L600-2(lines 600 603) the Hoare annotation is: false [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L625(lines 613 632) the Hoare annotation is: false [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: (and (<= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (= 2 ULTIMATE.start_main_~len~0)) [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-12-07 21:03:14,417 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2019-12-07 21:03:14,417 INFO L246 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-12-07 21:03:14,417 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 21:03:14,417 INFO L242 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2019-12-07 21:03:14,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:03:14 BoogieIcfgContainer [2019-12-07 21:03:14,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:03:14,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:03:14,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:03:14,429 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:03:14,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:14" (3/4) ... [2019-12-07 21:03:14,432 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 21:03:14,438 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2019-12-07 21:03:14,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-12-07 21:03:14,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 21:03:14,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1a5c5fa9-6b72-40b6-9b30-d412f98e2f65/bin/utaipan/witness.graphml [2019-12-07 21:03:14,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:03:14,481 INFO L168 Benchmark]: Toolchain (without parser) took 1091.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.2 MB in the beginning and 1.0 GB in the end (delta: -63.8 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:14,481 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:14,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:14,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:14,482 INFO L168 Benchmark]: Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:14,482 INFO L168 Benchmark]: RCFGBuilder took 356.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:14,483 INFO L168 Benchmark]: TraceAbstraction took 299.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:14,483 INFO L168 Benchmark]: Witness Printer took 50.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:14,485 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.88 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 356.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 299.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: len <= i + 1 && 2 == len - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: SAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 41 HoareAnnotationTreeSize, 9 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...