./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition02_false-unreach-call_true-no-overflow_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_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/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 4f9a38be18608b9918f157c72437435dc654871f ..................................................................................................................................................................................................................................................................................................................................... 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 [2018-12-02 05:08:38,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:08:38,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:08:38,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:08:38,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:08:38,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:08:38,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:08:38,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:08:38,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:08:38,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:08:38,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:08:38,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:08:38,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:08:38,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:08:38,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:08:38,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:08:38,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:08:38,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:08:38,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:08:38,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:08:38,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:08:38,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:08:38,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:08:38,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:08:38,783 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:08:38,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:08:38,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:08:38,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:08:38,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:08:38,785 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:08:38,785 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:08:38,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:08:38,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:08:38,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:08:38,786 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:08:38,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:08:38,787 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 05:08:38,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:08:38,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:08:38,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:08:38,794 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:08:38,795 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 05:08:38,795 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:08:38,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:08:38,796 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:08:38,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:08:38,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:08:38,797 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:08:38,798 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 05:08:38,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:08:38,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:08:38,798 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 05:08:38,798 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_a3b85729-7b07-4b31-b002-991ca04e40f5/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 -> 4f9a38be18608b9918f157c72437435dc654871f [2018-12-02 05:08:38,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:08:38,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:08:38,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:08:38,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:08:38,824 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:08:38,825 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/../../sv-benchmarks/c/recursive/Addition02_false-unreach-call_true-no-overflow_true-termination.c [2018-12-02 05:08:38,859 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/data/78967f93d/f89f72086e3347d7b82fdba8b22dd0d1/FLAG9b36df57a [2018-12-02 05:08:39,285 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:08:39,286 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/sv-benchmarks/c/recursive/Addition02_false-unreach-call_true-no-overflow_true-termination.c [2018-12-02 05:08:39,289 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/data/78967f93d/f89f72086e3347d7b82fdba8b22dd0d1/FLAG9b36df57a [2018-12-02 05:08:39,298 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/data/78967f93d/f89f72086e3347d7b82fdba8b22dd0d1 [2018-12-02 05:08:39,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:08:39,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:08:39,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:08:39,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:08:39,303 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:08:39,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39, skipping insertion in model container [2018-12-02 05:08:39,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:08:39,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:08:39,402 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:08:39,404 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:08:39,414 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:08:39,421 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:08:39,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39 WrapperNode [2018-12-02 05:08:39,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:08:39,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:08:39,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:08:39,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:08:39,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:08:39,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:08:39,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:08:39,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:08:39,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... [2018-12-02 05:08:39,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:08:39,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:08:39,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:08:39,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:08:39,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/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 [2018-12-02 05:08:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 05:08:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 05:08:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:08:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:08:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 05:08:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 05:08:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2018-12-02 05:08:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2018-12-02 05:08:39,591 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:08:39,591 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 05:08:39,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:08:39 BoogieIcfgContainer [2018-12-02 05:08:39,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:08:39,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:08:39,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:08:39,594 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:08:39,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:08:39" (1/3) ... [2018-12-02 05:08:39,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665f4c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:08:39, skipping insertion in model container [2018-12-02 05:08:39,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:08:39" (2/3) ... [2018-12-02 05:08:39,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665f4c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:08:39, skipping insertion in model container [2018-12-02 05:08:39,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:08:39" (3/3) ... [2018-12-02 05:08:39,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition02_false-unreach-call_true-no-overflow_true-termination.c [2018-12-02 05:08:39,602 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:08:39,607 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:08:39,616 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:08:39,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:08:39,634 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:08:39,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:08:39,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:08:39,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:08:39,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:08:39,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:08:39,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:08:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-12-02 05:08:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 05:08:39,647 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:08:39,648 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:08:39,649 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:08:39,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:08:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2018-12-02 05:08:39,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:08:39,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:39,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:08:39,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:39,683 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:08:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:08:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:08:39,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:08:39,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 05:08:39,803 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:08:39,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 05:08:39,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 05:08:39,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 05:08:39,815 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2018-12-02 05:08:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:08:39,948 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2018-12-02 05:08:39,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:08:39,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-12-02 05:08:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:08:39,955 INFO L225 Difference]: With dead ends: 38 [2018-12-02 05:08:39,955 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 05:08:39,957 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-12-02 05:08:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 05:08:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 05:08:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 05:08:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-12-02 05:08:39,984 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2018-12-02 05:08:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:08:39,985 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-12-02 05:08:39,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 05:08:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2018-12-02 05:08:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-02 05:08:39,986 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:08:39,986 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:08:39,986 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:08:39,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:08:39,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2018-12-02 05:08:39,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:08:39,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:39,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:08:39,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:39,988 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:08:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:08:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:08:40,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:08:40,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 05:08:40,003 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:08:40,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 05:08:40,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 05:08:40,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:08:40,005 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2018-12-02 05:08:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:08:40,026 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2018-12-02 05:08:40,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 05:08:40,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-12-02 05:08:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:08:40,027 INFO L225 Difference]: With dead ends: 34 [2018-12-02 05:08:40,027 INFO L226 Difference]: Without dead ends: 26 [2018-12-02 05:08:40,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 05:08:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-02 05:08:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-12-02 05:08:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 05:08:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-02 05:08:40,032 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2018-12-02 05:08:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:08:40,032 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-02 05:08:40,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 05:08:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-02 05:08:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:08:40,033 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:08:40,033 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:08:40,033 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:08:40,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:08:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2018-12-02 05:08:40,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:08:40,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:40,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:08:40,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:08:40,034 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:08:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:08:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 05:08:40,065 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 05:08:40,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:08:40 BoogieIcfgContainer [2018-12-02 05:08:40,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:08:40,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:08:40,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:08:40,085 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:08:40,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:08:39" (3/4) ... [2018-12-02 05:08:40,086 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 05:08:40,113 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a3b85729-7b07-4b31-b002-991ca04e40f5/bin-2019/utaipan/witness.graphml [2018-12-02 05:08:40,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:08:40,114 INFO L168 Benchmark]: Toolchain (without parser) took 814.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -98.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:08:40,115 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:08:40,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:08:40,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:08:40,116 INFO L168 Benchmark]: Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:08:40,116 INFO L168 Benchmark]: RCFGBuilder took 147.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-02 05:08:40,116 INFO L168 Benchmark]: TraceAbstraction took 491.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:08:40,116 INFO L168 Benchmark]: Witness Printer took 29.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:08:40,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.21 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 147.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 491.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 11.5 GB. * Witness Printer took 29.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); [L28] COND FALSE !(m < 0 || m > 1073741823) [L33] int n = __VERIFIER_nondet_int(); [L34] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L39] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L14] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L17] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L18] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L14] COND TRUE n == 0 [L15] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L18] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L18] return addition(m+1, n-1); [L39] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L39] int result = addition(m,n); [L40] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L43] __VERIFIER_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 95 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...