./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 ca707ecc133af2ec0063556d89a3ce449d0860eb --rcfgbuilder.size.of.a.code.block SingleStatement .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:51:13,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:51:13,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:51:14,010 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:51:14,010 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:51:14,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:51:14,013 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:51:14,023 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:51:14,025 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:51:14,026 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:51:14,026 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:51:14,027 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:51:14,028 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:51:14,029 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:51:14,030 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:51:14,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:51:14,031 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:51:14,033 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:51:14,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:51:14,037 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:51:14,038 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:51:14,039 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:51:14,042 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:51:14,042 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:51:14,042 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:51:14,043 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:51:14,044 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:51:14,045 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:51:14,046 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:51:14,047 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:51:14,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:51:14,048 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:51:14,048 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:51:14,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:51:14,049 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:51:14,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:51:14,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:51:14,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:51:14,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:51:14,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:51:14,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:51:14,074 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:51:14,075 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:51:14,075 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:51:14,075 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:51:14,075 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:51:14,075 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:51:14,075 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:51:14,077 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:51:14,078 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:51:14,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:51:14,079 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:51:14,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:51:14,079 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:51:14,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:51:14,080 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:51:14,080 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:51:14,080 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:51:14,080 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:51:14,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:51:14,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:51:14,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:51:14,083 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:51:14,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:51:14,084 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:51:14,084 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:51:14,084 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:51:14,085 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:51:14,085 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:51:14,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:51:14,086 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:51:14,087 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> ca707ecc133af2ec0063556d89a3ce449d0860eb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:51:14,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:51:14,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:51:14,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:51:14,177 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:51:14,177 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:51:14,178 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i [2018-10-22 09:51:14,242 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d250da14d/2baadc3b7e364d6a91fc0c8f7e099c01/FLAG4bc16e7e1 [2018-10-22 09:51:14,661 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:51:14,662 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop_true-unreach-call_true-termination.i [2018-10-22 09:51:14,669 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d250da14d/2baadc3b7e364d6a91fc0c8f7e099c01/FLAG4bc16e7e1 [2018-10-22 09:51:14,684 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d250da14d/2baadc3b7e364d6a91fc0c8f7e099c01 [2018-10-22 09:51:14,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:51:14,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:51:14,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:51:14,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:51:14,699 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:51:14,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:14,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67121e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14, skipping insertion in model container [2018-10-22 09:51:14,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:14,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:51:14,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:51:14,924 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:51:14,928 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:51:14,947 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:51:14,964 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:51:14,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14 WrapperNode [2018-10-22 09:51:14,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:51:14,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:51:14,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:51:14,966 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:51:14,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:14,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:14,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:51:14,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:51:14,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:51:14,991 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:51:15,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... [2018-10-22 09:51:15,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:51:15,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:51:15,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:51:15,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:51:15,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 09:51:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:51:15,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:51:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:51:15,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:51:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:51:15,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:51:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:51:15,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:51:15,590 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:51:15,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:15 BoogieIcfgContainer [2018-10-22 09:51:15,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:51:15,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:51:15,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:51:15,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:51:15,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:51:14" (1/3) ... [2018-10-22 09:51:15,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@940b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:51:15, skipping insertion in model container [2018-10-22 09:51:15,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:51:14" (2/3) ... [2018-10-22 09:51:15,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@940b518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:51:15, skipping insertion in model container [2018-10-22 09:51:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:15" (3/3) ... [2018-10-22 09:51:15,609 INFO L112 eAbstractionObserver]: Analyzing ICFG NetBSD_loop_true-unreach-call_true-termination.i [2018-10-22 09:51:15,617 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:51:15,625 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:51:15,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:51:15,684 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:51:15,685 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:51:15,685 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:51:15,685 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:51:15,685 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:51:15,685 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:51:15,685 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:51:15,685 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:51:15,686 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:51:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-10-22 09:51:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-22 09:51:15,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:15,720 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:51:15,722 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:15,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:15,728 INFO L82 PathProgramCache]: Analyzing trace with hash -137976133, now seen corresponding path program 1 times [2018-10-22 09:51:15,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:15,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:15,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:15,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:15,784 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:16,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:51:16,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-22 09:51:16,128 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:51:16,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 09:51:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 09:51:16,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 09:51:16,152 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2018-10-22 09:51:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:16,629 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-10-22 09:51:16,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 09:51:16,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-10-22 09:51:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:16,643 INFO L225 Difference]: With dead ends: 71 [2018-10-22 09:51:16,643 INFO L226 Difference]: Without dead ends: 42 [2018-10-22 09:51:16,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-22 09:51:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-22 09:51:16,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-10-22 09:51:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-22 09:51:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-10-22 09:51:16,712 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 25 [2018-10-22 09:51:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:16,713 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-10-22 09:51:16,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 09:51:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-10-22 09:51:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-22 09:51:16,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:16,719 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:51:16,720 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:16,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:16,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1946377870, now seen corresponding path program 1 times [2018-10-22 09:51:16,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:16,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:16,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:16,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:16,724 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:51:17,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:17,116 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:51:17,118 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-10-22 09:51:17,120 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [12], [15], [19], [20], [21], [22], [23], [27], [32], [44], [47], [49], [52], [54], [55], [56], [57], [59], [60], [61] [2018-10-22 09:51:17,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:51:17,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:51:17,383 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:51:17,385 INFO L272 AbstractInterpreter]: Visited 28 different actions 32 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-10-22 09:51:17,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:17,397 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:51:17,533 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 58.94% of their original sizes. [2018-10-22 09:51:17,533 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:51:18,115 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:51:18,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:51:18,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2018-10-22 09:51:18,118 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:51:18,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 09:51:18,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 09:51:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-22 09:51:18,120 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2018-10-22 09:51:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:19,248 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-10-22 09:51:19,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 09:51:19,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2018-10-22 09:51:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:19,250 INFO L225 Difference]: With dead ends: 48 [2018-10-22 09:51:19,251 INFO L226 Difference]: Without dead ends: 46 [2018-10-22 09:51:19,252 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-10-22 09:51:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-22 09:51:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-10-22 09:51:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-22 09:51:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-10-22 09:51:19,265 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 30 [2018-10-22 09:51:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:19,265 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-10-22 09:51:19,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 09:51:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-10-22 09:51:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-22 09:51:19,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:19,267 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:51:19,268 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:19,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 54608625, now seen corresponding path program 1 times [2018-10-22 09:51:19,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:19,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:19,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:19,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:19,270 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-22 09:51:19,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:19,399 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:51:19,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-10-22 09:51:19,400 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [9], [10], [11], [12], [15], [19], [20], [21], [22], [23], [27], [32], [36], [37], [38], [44], [47], [49], [52], [54], [55], [56], [57], [59], [60], [61], [62] [2018-10-22 09:51:19,403 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:51:19,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:51:19,600 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 09:51:19,600 INFO L272 AbstractInterpreter]: Visited 33 different actions 161 times. Merged at 7 different actions 49 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-10-22 09:51:19,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:19,643 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 09:51:19,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:19,643 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 09:51:19,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:19,660 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 09:51:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:19,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-22 09:51:19,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-22 09:51:20,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:20,087 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 09:51:20,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:20,106 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 09:51:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:20,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 09:51:20,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 09:51:20,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-10-22 09:51:20,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 9, 8, 9] total 18 [2018-10-22 09:51:20,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:51:20,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 09:51:20,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 09:51:20,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-10-22 09:51:20,463 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2018-10-22 09:51:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:20,877 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-22 09:51:20,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-22 09:51:20,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-10-22 09:51:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:20,881 INFO L225 Difference]: With dead ends: 52 [2018-10-22 09:51:20,881 INFO L226 Difference]: Without dead ends: 50 [2018-10-22 09:51:20,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2018-10-22 09:51:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-22 09:51:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-10-22 09:51:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-22 09:51:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-22 09:51:20,896 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 40 [2018-10-22 09:51:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:20,896 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-22 09:51:20,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 09:51:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-22 09:51:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-22 09:51:20,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:51:20,898 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:51:20,899 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:51:20,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:51:20,899 INFO L82 PathProgramCache]: Analyzing trace with hash 753481468, now seen corresponding path program 2 times [2018-10-22 09:51:20,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:51:20,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:20,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:51:20,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:51:20,901 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:51:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:51:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-22 09:51:21,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:21,293 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:51:21,293 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 09:51:21,294 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 09:51:21,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:21,294 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 09:51:21,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 09:51:21,303 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 09:51:21,328 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 09:51:21,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 09:51:21,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:21,555 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:21,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:51:21,712 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 09:51:21,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 09:51:21,728 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 09:51:21,758 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 09:51:21,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 09:51:21,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 09:51:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:21,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 09:51:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-22 09:51:21,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 09:51:21,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10, 10, 10] total 21 [2018-10-22 09:51:21,930 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 09:51:21,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-22 09:51:21,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-22 09:51:21,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2018-10-22 09:51:21,931 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 17 states. [2018-10-22 09:51:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:51:22,433 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-10-22 09:51:22,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-22 09:51:22,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-10-22 09:51:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:51:22,436 INFO L225 Difference]: With dead ends: 57 [2018-10-22 09:51:22,436 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:51:22,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2018-10-22 09:51:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:51:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:51:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:51:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:51:22,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-10-22 09:51:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:51:22,439 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:51:22,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-22 09:51:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:51:22,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:51:22,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:51:22,632 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-10-22 09:51:23,384 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 25 [2018-10-22 09:51:23,540 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 24 [2018-10-22 09:51:23,842 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 25 [2018-10-22 09:51:23,846 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:51:23,846 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:51:23,846 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:51:23,846 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:51:23,846 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:51:23,847 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= main_~bound_off~0 main_~MAXPATHLEN~0) (<= 1 (+ main_~glob2_pathbuf_off~0 main_~glob2_pathlim_off~0)) (<= 0 (* 2 main_~pathbuf_off~0)) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 1 (+ main_~bound_off~0 main_~glob2_pathbuf_off~0)) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~MAXPATHLEN~0 (+ main_~pathbuf_off~0 2147483646)) (= main_~glob2_pathbuf_off~0 0)) [2018-10-22 09:51:23,847 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= main_~bound_off~0 main_~MAXPATHLEN~0) (<= 1 (+ main_~glob2_pathbuf_off~0 main_~glob2_pathlim_off~0)) (<= 0 (* 2 main_~pathbuf_off~0)) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 1 (+ main_~bound_off~0 main_~glob2_pathbuf_off~0)) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= main_~MAXPATHLEN~0 (+ main_~pathbuf_off~0 2147483646)) (= main_~glob2_pathbuf_off~0 0)) [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 31) no Hoare annotation was computed. [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-10-22 09:51:23,847 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 31) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L428 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2018-10-22 09:51:23,848 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 31) the Hoare annotation is: true [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-10-22 09:51:23,848 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-10-22 09:51:23,849 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-10-22 09:51:23,851 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-22 09:51:23,851 INFO L425 ceAbstractionStarter]: For program point L24-2(lines 24 29) no Hoare annotation was computed. [2018-10-22 09:51:23,851 INFO L421 ceAbstractionStarter]: At program point L24-4(lines 24 29) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= main_~bound_off~0 main_~MAXPATHLEN~0) (<= 1 (+ main_~glob2_pathbuf_off~0 main_~glob2_pathlim_off~0)) (<= 0 (* 2 main_~pathbuf_off~0)) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 1 (+ main_~bound_off~0 main_~glob2_pathbuf_off~0)) (<= main_~MAXPATHLEN~0 (+ main_~pathbuf_off~0 2147483646)) (= main_~glob2_pathbuf_off~0 0)) [2018-10-22 09:51:23,851 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:51:23,852 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:51:23,853 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:51:23,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:51:23 BoogieIcfgContainer [2018-10-22 09:51:23,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:51:23,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:51:23,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:51:23,865 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:51:23,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:51:15" (3/4) ... [2018-10-22 09:51:23,870 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:51:23,876 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:51:23,877 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:51:23,877 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:51:23,881 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-22 09:51:23,881 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-22 09:51:23,882 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:51:23,928 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:51:23,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:51:23,929 INFO L168 Benchmark]: Toolchain (without parser) took 9237.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 951.9 MB in the beginning and 871.2 MB in the end (delta: 80.6 MB). Peak memory consumption was 291.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:23,930 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:23,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:23,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.54 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:23,933 INFO L168 Benchmark]: Boogie Preprocessor took 24.19 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:51:23,933 INFO L168 Benchmark]: RCFGBuilder took 576.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:23,935 INFO L168 Benchmark]: TraceAbstraction took 8265.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 878.7 MB in the end (delta: 253.1 MB). Peak memory consumption was 314.9 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:23,936 INFO L168 Benchmark]: Witness Printer took 63.54 ms. Allocated memory is still 1.2 GB. Free memory was 878.7 MB in the beginning and 871.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-10-22 09:51:23,941 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 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 24.54 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.19 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 576.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8265.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 878.7 MB in the end (delta: 253.1 MB). Peak memory consumption was 314.9 MB. Max. memory is 11.5 GB. * Witness Printer took 63.54 ms. Allocated memory is still 1.2 GB. Free memory was 878.7 MB in the beginning and 871.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((glob2_pathlim_off <= MAXPATHLEN && bound_off <= MAXPATHLEN) && 1 <= glob2_pathbuf_off + glob2_pathlim_off) && 0 <= 2 * pathbuf_off) && pathbuf_off <= 0) && 0 <= glob2_p_off) && 1 <= bound_off + glob2_pathbuf_off) && MAXPATHLEN <= pathbuf_off + 2147483646) && glob2_pathbuf_off == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 37 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 1.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 223 SDslu, 623 SDs, 0 SdLazy, 263 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 417 GetRequests, 335 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.8965517241379313 AbsIntWeakeningRatio, 0.5862068965517241 AbsIntAvgWeakeningVarsNumRemoved, 11.241379310344827 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 120 HoareAnnotationTreeSize, 16 FomulaSimplifications, 560 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1636 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 41235 SizeOfPredicates, 24 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 126/167 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...