./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/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 e8f83f4c04fbac90273b8f8e733ac05d1463068f ............................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:24:35,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:24:35,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:24:35,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:24:35,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:24:35,771 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:24:35,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:24:35,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:24:35,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:24:35,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:24:35,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:24:35,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:24:35,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:24:35,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:24:35,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:24:35,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:24:35,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:24:35,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:24:35,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:24:35,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:24:35,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:24:35,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:24:35,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:24:35,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:24:35,787 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:24:35,787 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:24:35,788 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:24:35,789 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:24:35,789 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:24:35,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:24:35,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:24:35,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:24:35,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:24:35,791 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:24:35,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:24:35,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:24:35,792 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 16:24:35,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:24:35,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:24:35,803 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:24:35,803 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:24:35,803 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:24:35,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 16:24:35,804 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:24:35,805 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:24:35,805 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:24:35,805 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:24:35,805 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:24:35,805 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:24:35,806 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:24:35,806 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:24:35,807 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 16:24:35,807 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 16:24:35,807 INFO L133 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/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/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 -> e8f83f4c04fbac90273b8f8e733ac05d1463068f [2018-12-08 16:24:35,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:24:35,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:24:35,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:24:35,841 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:24:35,841 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:24:35,841 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c [2018-12-08 16:24:35,881 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/data/69cc0a597/ec38be1e55274a1aa1726608d7163cfa/FLAGf7e71531b [2018-12-08 16:24:36,310 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:24:36,310 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/sv-benchmarks/c/recursive-simple/afterrec_false-unreach-call_true-termination.c [2018-12-08 16:24:36,313 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/data/69cc0a597/ec38be1e55274a1aa1726608d7163cfa/FLAGf7e71531b [2018-12-08 16:24:36,321 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/data/69cc0a597/ec38be1e55274a1aa1726608d7163cfa [2018-12-08 16:24:36,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:24:36,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:24:36,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:24:36,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:24:36,326 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:24:36,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6357a878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36, skipping insertion in model container [2018-12-08 16:24:36,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:24:36,341 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:24:36,421 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:24:36,423 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:24:36,430 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:24:36,437 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:24:36,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36 WrapperNode [2018-12-08 16:24:36,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:24:36,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:24:36,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:24:36,438 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:24:36,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:24:36,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:24:36,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:24:36,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:24:36,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... [2018-12-08 16:24:36,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:24:36,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:24:36,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:24:36,460 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:24:36,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/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 [2018-12-08 16:24:36,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:24:36,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:24:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-12-08 16:24:36,521 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-12-08 16:24:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:24:36,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:24:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:24:36,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:24:36,589 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:24:36,589 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 16:24:36,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:24:36 BoogieIcfgContainer [2018-12-08 16:24:36,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:24:36,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:24:36,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:24:36,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:24:36,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:24:36" (1/3) ... [2018-12-08 16:24:36,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa79b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:24:36, skipping insertion in model container [2018-12-08 16:24:36,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:24:36" (2/3) ... [2018-12-08 16:24:36,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa79b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:24:36, skipping insertion in model container [2018-12-08 16:24:36,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:24:36" (3/3) ... [2018-12-08 16:24:36,594 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_false-unreach-call_true-termination.c [2018-12-08 16:24:36,599 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:24:36,604 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:24:36,613 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:24:36,631 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:24:36,631 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:24:36,631 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:24:36,631 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:24:36,631 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:24:36,631 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:24:36,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:24:36,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:24:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-08 16:24:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 16:24:36,645 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:24:36,646 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:24:36,647 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:24:36,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:24:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2018-12-08 16:24:36,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:24:36,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:24:36,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:24:36,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:24:36,679 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:24:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:24:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:24:36,719 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 16:24:36,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:24:36 BoogieIcfgContainer [2018-12-08 16:24:36,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 16:24:36,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:24:36,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:24:36,734 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:24:36,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:24:36" (3/4) ... [2018-12-08 16:24:36,736 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 16:24:36,760 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_030f29fc-c3d6-4b59-b7d1-ca0c40eadc00/bin-2019/utaipan/witness.graphml [2018-12-08 16:24:36,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:24:36,760 INFO L168 Benchmark]: Toolchain (without parser) took 437.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -113.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-08 16:24:36,761 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:24:36,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.61 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 16:24:36,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.48 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:24:36,762 INFO L168 Benchmark]: Boogie Preprocessor took 9.82 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:24:36,762 INFO L168 Benchmark]: RCFGBuilder took 129.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-08 16:24:36,763 INFO L168 Benchmark]: TraceAbstraction took 143.27 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-08 16:24:36,763 INFO L168 Benchmark]: Witness Printer took 26.68 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-08 16:24:36,764 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.61 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.48 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.82 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 129.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 143.27 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Witness Printer took 26.68 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] CALL f(4) VAL [\old(n)=4] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=4, n=3] [L6] CALL f(n) VAL [\old(n)=3] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=3, n=2] [L6] CALL f(n) VAL [\old(n)=2] [L4] COND TRUE n<3 VAL [\old(n)=2, n=2] [L6] RET f(n) VAL [\old(n)=3, n=2] [L7] __VERIFIER_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...