./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/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 30601811463d073f869bef96a3132d41c5e6f5ce ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:30:25,911 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:30:25,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:30:25,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:30:25,922 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:30:25,922 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:30:25,923 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:30:25,925 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:30:25,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:30:25,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:30:25,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:30:25,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:30:25,929 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:30:25,930 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:30:25,931 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:30:25,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:30:25,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:30:25,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:30:25,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:30:25,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:30:25,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:30:25,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:30:25,940 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:30:25,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:30:25,941 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:30:25,942 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:30:25,943 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:30:25,943 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:30:25,944 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:30:25,945 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:30:25,945 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:30:25,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:30:25,946 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:30:25,947 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:30:25,947 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:30:25,948 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:30:25,948 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:30:25,959 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:30:25,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:30:25,960 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:30:25,960 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:30:25,960 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:30:25,961 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:30:25,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:30:25,962 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:30:25,962 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:30:25,963 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:30:25,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:30:25,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:30:25,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:30:25,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:30:25,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:30:25,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:30:25,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:30:25,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:30:25,965 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:30:25,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:30:25,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:30:25,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:30:25,965 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_b764e58c-acda-4cab-91f0-b5f0172faf99/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 -> 30601811463d073f869bef96a3132d41c5e6f5ce [2018-10-26 23:30:25,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:30:26,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:30:26,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:30:26,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:30:26,005 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:30:26,006 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/afterrec_true-unreach-call_true-termination.c [2018-10-26 23:30:26,048 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/data/2be0adc42/e4cc0153e81f4c7f85feb57ca3bb54b1/FLAGe298e94e9 [2018-10-26 23:30:26,418 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:30:26,419 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/sv-benchmarks/c/recursive-simple/afterrec_true-unreach-call_true-termination.c [2018-10-26 23:30:26,423 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/data/2be0adc42/e4cc0153e81f4c7f85feb57ca3bb54b1/FLAGe298e94e9 [2018-10-26 23:30:26,433 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/data/2be0adc42/e4cc0153e81f4c7f85feb57ca3bb54b1 [2018-10-26 23:30:26,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:30:26,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:30:26,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:30:26,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:30:26,440 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:30:26,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe34cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26, skipping insertion in model container [2018-10-26 23:30:26,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:30:26,461 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:30:26,568 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:30:26,570 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:30:26,580 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:30:26,589 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:30:26,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26 WrapperNode [2018-10-26 23:30:26,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:30:26,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:30:26,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:30:26,590 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:30:26,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:30:26,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:30:26,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:30:26,607 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:30:26,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... [2018-10-26 23:30:26,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:30:26,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:30:26,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:30:26,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:30:26,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/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 [2018-10-26 23:30:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:30:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:30:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-26 23:30:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-26 23:30:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:30:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:30:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:30:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:30:26,899 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:30:26,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:26 BoogieIcfgContainer [2018-10-26 23:30:26,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:30:26,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:30:26,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:30:26,907 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:30:26,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:30:26" (1/3) ... [2018-10-26 23:30:26,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34198429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:26, skipping insertion in model container [2018-10-26 23:30:26,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:30:26" (2/3) ... [2018-10-26 23:30:26,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34198429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:30:26, skipping insertion in model container [2018-10-26 23:30:26,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:26" (3/3) ... [2018-10-26 23:30:26,909 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec_true-unreach-call_true-termination.c [2018-10-26 23:30:26,916 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:30:26,921 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:30:26,931 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:30:26,955 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:30:26,955 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:30:26,955 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:30:26,955 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:30:26,955 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:30:26,956 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:30:26,956 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:30:26,956 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:30:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-10-26 23:30:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:30:26,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:30:26,975 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:30:26,977 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:30:26,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:30:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2018-10-26 23:30:26,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:30:27,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:30:27,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:30:27,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:30:27,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:30:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:30:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 23:30:27,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:30:27,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:30:27,144 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-26 23:30:27,146 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [5], [8], [10], [16], [17], [18], [19], [20], [22] [2018-10-26 23:30:27,189 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:30:27,189 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:30:27,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:30:27,278 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-10-26 23:30:27,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:30:27,353 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:30:27,415 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-10-26 23:30:27,415 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:30:27,470 INFO L415 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2018-10-26 23:30:27,470 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:30:27,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:30:27,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-10-26 23:30:27,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:30:27,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:30:27,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:30:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:30:27,478 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-10-26 23:30:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:30:27,547 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-10-26 23:30:27,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:30:27,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 23:30:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:30:27,553 INFO L225 Difference]: With dead ends: 24 [2018-10-26 23:30:27,553 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 23:30:27,556 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:30:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 23:30:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 23:30:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 23:30:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 23:30:27,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-26 23:30:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:30:27,578 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 23:30:27,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:30:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 23:30:27,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 23:30:27,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 23:30:27,633 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 23:30:27,633 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:30:27,633 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-10-26 23:30:27,633 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:30:27,633 INFO L421 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (not (= |f_#in~n| 2)) [2018-10-26 23:30:27,633 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 3 8) the Hoare annotation is: true [2018-10-26 23:30:27,633 INFO L425 ceAbstractionStarter]: For program point L6-1(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 3 8) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 23:30:27,634 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 12) the Hoare annotation is: true [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 12) no Hoare annotation was computed. [2018-10-26 23:30:27,634 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 12) no Hoare annotation was computed. [2018-10-26 23:30:27,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:30:27 BoogieIcfgContainer [2018-10-26 23:30:27,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:30:27,636 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:30:27,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:30:27,637 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:30:27,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:30:26" (3/4) ... [2018-10-26 23:30:27,640 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 23:30:27,648 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 23:30:27,648 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-10-26 23:30:27,649 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 23:30:27,652 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-26 23:30:27,653 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 23:30:27,654 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 23:30:27,687 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b764e58c-acda-4cab-91f0-b5f0172faf99/bin-2019/utaipan/witness.graphml [2018-10-26 23:30:27,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:30:27,688 INFO L168 Benchmark]: Toolchain (without parser) took 1252.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -134.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:30:27,689 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:30:27,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.70 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 23:30:27,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.56 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:30:27,691 INFO L168 Benchmark]: Boogie Preprocessor took 13.69 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:30:27,691 INFO L168 Benchmark]: RCFGBuilder took 278.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-10-26 23:30:27,691 INFO L168 Benchmark]: TraceAbstraction took 736.48 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:30:27,692 INFO L168 Benchmark]: Witness Printer took 51.23 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:30:27,695 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 152.70 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 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 16.56 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.69 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 278.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 736.48 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: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. * Witness Printer took 51.23 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 1 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9555555555555555 AbsIntWeakeningRatio, 0.5333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 0.4666666666666667 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 9 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 285 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 0 PerfectInterpolantSequences, 3/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...