./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/terminator_03_true-unreach-call_true-termination.i --full-output --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/loops/terminator_03_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 a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-21 12:29:11,791 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-21 12:29:11,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-21 12:29:11,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-21 12:29:11,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-21 12:29:11,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-21 12:29:11,808 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-21 12:29:11,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-21 12:29:11,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-21 12:29:11,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-21 12:29:11,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-21 12:29:11,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-21 12:29:11,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-21 12:29:11,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-21 12:29:11,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-21 12:29:11,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-21 12:29:11,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-21 12:29:11,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-21 12:29:11,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-21 12:29:11,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-21 12:29:11,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-21 12:29:11,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-21 12:29:11,831 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-21 12:29:11,831 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-21 12:29:11,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-21 12:29:11,832 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-21 12:29:11,834 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-21 12:29:11,835 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-21 12:29:11,836 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-21 12:29:11,837 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-21 12:29:11,837 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-21 12:29:11,838 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-21 12:29:11,838 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-21 12:29:11,838 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-21 12:29:11,840 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-21 12:29:11,841 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-21 12:29:11,841 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-21 12:29:11,856 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-21 12:29:11,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-21 12:29:11,858 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-21 12:29:11,858 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-21 12:29:11,858 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-21 12:29:11,858 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-21 12:29:11,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-21 12:29:11,859 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-21 12:29:11,859 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-21 12:29:11,859 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-21 12:29:11,859 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-21 12:29:11,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-21 12:29:11,861 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-21 12:29:11,861 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-21 12:29:11,861 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-21 12:29:11,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-21 12:29:11,862 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-21 12:29:11,862 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-21 12:29:11,862 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-21 12:29:11,862 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-21 12:29:11,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-21 12:29:11,864 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-21 12:29:11,864 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-21 12:29:11,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-21 12:29:11,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-21 12:29:11,865 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-21 12:29:11,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-21 12:29:11,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-21 12:29:11,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-21 12:29:11,867 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 -> a269e8b2c2a55ee83f0497e8cbfb0a6499d0714f [2018-10-21 12:29:11,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-21 12:29:11,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-21 12:29:11,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-21 12:29:11,923 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-21 12:29:11,924 INFO L276 PluginConnector]: CDTParser initialized [2018-10-21 12:29:11,924 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/terminator_03_true-unreach-call_true-termination.i [2018-10-21 12:29:11,985 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/851f2b342/914cc272b65844b9bd37be72727f2d12/FLAG925bd9642 [2018-10-21 12:29:12,413 INFO L298 CDTParser]: Found 1 translation units. [2018-10-21 12:29:12,414 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03_true-unreach-call_true-termination.i [2018-10-21 12:29:12,420 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/851f2b342/914cc272b65844b9bd37be72727f2d12/FLAG925bd9642 [2018-10-21 12:29:12,435 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/851f2b342/914cc272b65844b9bd37be72727f2d12 [2018-10-21 12:29:12,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-21 12:29:12,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-21 12:29:12,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-21 12:29:12,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-21 12:29:12,450 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-21 12:29:12,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a903d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12, skipping insertion in model container [2018-10-21 12:29:12,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-21 12:29:12,486 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-21 12:29:12,716 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:29:12,722 INFO L189 MainTranslator]: Completed pre-run [2018-10-21 12:29:12,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-21 12:29:12,756 INFO L193 MainTranslator]: Completed translation [2018-10-21 12:29:12,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12 WrapperNode [2018-10-21 12:29:12,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-21 12:29:12,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-21 12:29:12,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-21 12:29:12,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-21 12:29:12,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-21 12:29:12,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-21 12:29:12,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-21 12:29:12,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-21 12:29:12,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (1/1) ... [2018-10-21 12:29:12,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-21 12:29:12,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-21 12:29:12,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-21 12:29:12,798 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-21 12:29:12,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (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 [2018-10-21 12:29:12,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-21 12:29:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-21 12:29:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-21 12:29:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-21 12:29:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-21 12:29:12,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-21 12:29:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-21 12:29:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-21 12:29:13,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-21 12:29:13,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:13 BoogieIcfgContainer [2018-10-21 12:29:13,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-21 12:29:13,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-21 12:29:13,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-21 12:29:13,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-21 12:29:13,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 12:29:12" (1/3) ... [2018-10-21 12:29:13,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b948e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:29:13, skipping insertion in model container [2018-10-21 12:29:13,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 12:29:12" (2/3) ... [2018-10-21 12:29:13,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b948e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 12:29:13, skipping insertion in model container [2018-10-21 12:29:13,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:13" (3/3) ... [2018-10-21 12:29:13,165 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_03_true-unreach-call_true-termination.i [2018-10-21 12:29:13,185 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-21 12:29:13,197 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-21 12:29:13,221 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-21 12:29:13,259 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-21 12:29:13,260 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-21 12:29:13,260 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-21 12:29:13,260 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-21 12:29:13,261 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-21 12:29:13,261 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-21 12:29:13,261 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-21 12:29:13,261 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-21 12:29:13,261 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-21 12:29:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-21 12:29:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-21 12:29:13,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:29:13,290 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:29:13,293 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:29:13,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash 439143249, now seen corresponding path program 1 times [2018-10-21 12:29:13,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:29:13,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:13,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:13,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:13,353 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:29:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:13,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:29:13,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-21 12:29:13,528 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:29:13,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-21 12:29:13,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-21 12:29:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-21 12:29:13,547 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-10-21 12:29:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:29:13,680 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-10-21 12:29:13,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-21 12:29:13,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-21 12:29:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:29:13,697 INFO L225 Difference]: With dead ends: 41 [2018-10-21 12:29:13,698 INFO L226 Difference]: Without dead ends: 14 [2018-10-21 12:29:13,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:29:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-21 12:29:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-21 12:29:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-21 12:29:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-21 12:29:13,758 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-21 12:29:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:29:13,758 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-21 12:29:13,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-21 12:29:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-21 12:29:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-21 12:29:13,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-21 12:29:13,759 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-21 12:29:13,763 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-21 12:29:13,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-21 12:29:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash -216018202, now seen corresponding path program 1 times [2018-10-21 12:29:13,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-21 12:29:13,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:13,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-21 12:29:13,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-21 12:29:13,767 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-21 12:29:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-21 12:29:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-21 12:29:14,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-21 12:29:14,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-21 12:29:14,021 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-21 12:29:14,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-21 12:29:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-21 12:29:14,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-21 12:29:14,025 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-10-21 12:29:14,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-21 12:29:14,122 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-21 12:29:14,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-21 12:29:14,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-21 12:29:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-21 12:29:14,123 INFO L225 Difference]: With dead ends: 14 [2018-10-21 12:29:14,123 INFO L226 Difference]: Without dead ends: 0 [2018-10-21 12:29:14,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-21 12:29:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-21 12:29:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-21 12:29:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-21 12:29:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-21 12:29:14,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-21 12:29:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-21 12:29:14,130 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-21 12:29:14,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-21 12:29:14,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-21 12:29:14,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-21 12:29:14,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-21 12:29:14,263 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-21 12:29:14,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:29:14,263 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-21 12:29:14,263 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-21 12:29:14,263 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-21 12:29:14,264 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-21 12:29:14,264 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2018-10-21 12:29:14,264 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2018-10-21 12:29:14,264 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-21 12:29:14,264 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-10-21 12:29:14,264 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 18) no Hoare annotation was computed. [2018-10-21 12:29:14,265 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-21 12:29:14,265 INFO L421 ceAbstractionStarter]: At program point L15-1(lines 15 19) the Hoare annotation is: (or (< 99 main_~x~0) (<= main_~y~0 0)) [2018-10-21 12:29:14,266 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 18) the Hoare annotation is: (< 0 main_~y~0) [2018-10-21 12:29:14,266 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2018-10-21 12:29:14,266 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-21 12:29:14,266 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:29:14,266 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-21 12:29:14,266 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-21 12:29:14,266 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-21 12:29:14,267 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-21 12:29:14,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 12:29:14 BoogieIcfgContainer [2018-10-21 12:29:14,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-21 12:29:14,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-21 12:29:14,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-21 12:29:14,281 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-21 12:29:14,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 12:29:13" (3/4) ... [2018-10-21 12:29:14,284 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-21 12:29:14,292 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-21 12:29:14,292 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-21 12:29:14,292 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-21 12:29:14,297 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-21 12:29:14,297 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-21 12:29:14,297 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-21 12:29:14,348 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-21 12:29:14,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-21 12:29:14,349 INFO L168 Benchmark]: Toolchain (without parser) took 1907.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:14,351 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-10-21 12:29:14,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.93 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:14,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:29:14,353 INFO L168 Benchmark]: Boogie Preprocessor took 21.29 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:29:14,354 INFO L168 Benchmark]: RCFGBuilder took 356.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -199.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:14,355 INFO L168 Benchmark]: TraceAbstraction took 1124.03 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2018-10-21 12:29:14,356 INFO L168 Benchmark]: Witness Printer took 68.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-21 12:29:14,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 312.93 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 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 19.13 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.29 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 356.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -199.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1124.03 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: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. * Witness Printer took 68.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 16]: Loop Invariant Derived loop invariant: 0 < y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 10 SDslu, 86 SDs, 0 SdLazy, 26 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...