java -Xmx8000000000 -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 ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 10:03:59,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 10:03:59,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 10:03:59,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 10:03:59,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 10:03:59,367 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 10:03:59,368 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 10:03:59,372 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 10:03:59,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 10:03:59,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 10:03:59,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 10:03:59,386 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 10:03:59,387 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 10:03:59,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 10:03:59,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 10:03:59,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 10:03:59,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 10:03:59,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 10:03:59,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 10:03:59,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 10:03:59,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 10:03:59,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 10:03:59,412 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 10:03:59,424 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 10:03:59,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 10:03:59,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 10:03:59,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 10:03:59,449 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 10:03:59,449 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 10:03:59,449 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 10:03:59,449 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 10:03:59,450 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 10:03:59,450 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 10:03:59,450 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 10:03:59,450 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 10:03:59,450 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 10:03:59,451 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 10:03:59,451 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 10:03:59,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 10:03:59,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 10:03:59,452 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 10:03:59,452 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 10:03:59,452 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 10:03:59,452 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 10:03:59,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 10:03:59,453 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 10:03:59,453 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 10:03:59,453 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 10:03:59,453 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 10:03:59,454 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 10:03:59,454 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 10:03:59,454 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 10:03:59,454 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 10:03:59,454 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 10:03:59,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 10:03:59,455 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 10:03:59,455 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 10:03:59,455 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 10:03:59,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 10:03:59,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 10:03:59,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 10:03:59,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 10:03:59,520 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 10:03:59,521 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-10-23 10:03:59,591 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c618ed14/1a18498d99b444778aeb2391f7c8a977/FLAGd6e2d9a80 [2018-10-23 10:04:00,002 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 10:04:00,003 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build_true-unreach-call_true-termination.i [2018-10-23 10:04:00,010 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c618ed14/1a18498d99b444778aeb2391f7c8a977/FLAGd6e2d9a80 [2018-10-23 10:04:00,025 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2c618ed14/1a18498d99b444778aeb2391f7c8a977 [2018-10-23 10:04:00,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 10:04:00,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 10:04:00,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 10:04:00,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 10:04:00,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 10:04:00,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e64e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00, skipping insertion in model container [2018-10-23 10:04:00,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 10:04:00,085 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 10:04:00,311 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:04:00,315 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 10:04:00,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 10:04:00,355 INFO L193 MainTranslator]: Completed translation [2018-10-23 10:04:00,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00 WrapperNode [2018-10-23 10:04:00,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 10:04:00,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 10:04:00,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 10:04:00,357 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 10:04:00,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 10:04:00,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 10:04:00,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 10:04:00,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 10:04:00,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (1/1) ... [2018-10-23 10:04:00,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 10:04:00,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 10:04:00,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 10:04:00,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 10:04:00,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (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 [2018-10-23 10:04:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 10:04:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 10:04:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 10:04:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 10:04:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 10:04:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 10:04:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 10:04:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 10:04:00,885 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 10:04:00,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:04:00 BoogieIcfgContainer [2018-10-23 10:04:00,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 10:04:00,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 10:04:00,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 10:04:00,890 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 10:04:00,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:04:00" (1/3) ... [2018-10-23 10:04:00,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433f1182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:04:00, skipping insertion in model container [2018-10-23 10:04:00,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:04:00" (2/3) ... [2018-10-23 10:04:00,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433f1182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:04:00, skipping insertion in model container [2018-10-23 10:04:00,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:04:00" (3/3) ... [2018-10-23 10:04:00,893 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build_true-unreach-call_true-termination.i [2018-10-23 10:04:00,906 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 10:04:00,915 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 10:04:00,935 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 10:04:00,971 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 10:04:00,971 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 10:04:00,972 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 10:04:00,972 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 10:04:00,972 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 10:04:00,972 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 10:04:00,972 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 10:04:00,973 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 10:04:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-10-23 10:04:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 10:04:00,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:04:00,999 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:04:01,002 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:04:01,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:04:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1225232818, now seen corresponding path program 1 times [2018-10-23 10:04:01,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:04:01,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:01,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:04:01,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:01,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:04:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:04:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:04:01,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 10:04:01,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 10:04:01,240 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:04:01,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 10:04:01,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 10:04:01,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 10:04:01,259 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-10-23 10:04:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:04:01,408 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2018-10-23 10:04:01,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 10:04:01,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-23 10:04:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:04:01,420 INFO L225 Difference]: With dead ends: 47 [2018-10-23 10:04:01,420 INFO L226 Difference]: Without dead ends: 23 [2018-10-23 10:04:01,424 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 [2018-10-23 10:04:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-23 10:04:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-23 10:04:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-23 10:04:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-23 10:04:01,462 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2018-10-23 10:04:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:04:01,463 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-23 10:04:01,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 10:04:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-23 10:04:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 10:04:01,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:04:01,464 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:04:01,465 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:04:01,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:04:01,466 INFO L82 PathProgramCache]: Analyzing trace with hash 842211255, now seen corresponding path program 1 times [2018-10-23 10:04:01,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:04:01,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:01,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:04:01,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:01,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:04:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:04:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 10:04:01,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:04:01,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 10:04:01,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-10-23 10:04:01,659 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [13], [17], [22], [36], [39], [41], [44], [46], [47], [48], [49], [51], [52], [53] [2018-10-23 10:04:01,708 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 10:04:01,709 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 10:04:01,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 10:04:01,861 INFO L272 AbstractInterpreter]: Visited 16 different actions 20 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-10-23 10:04:01,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:04:01,878 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 10:04:01,967 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 66.67% of their original sizes. [2018-10-23 10:04:01,968 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 10:04:02,199 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 10:04:02,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 10:04:02,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-23 10:04:02,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:04:02,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 10:04:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 10:04:02,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 10:04:02,203 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states. [2018-10-23 10:04:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:04:02,927 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2018-10-23 10:04:02,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 10:04:02,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-10-23 10:04:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:04:02,929 INFO L225 Difference]: With dead ends: 62 [2018-10-23 10:04:02,929 INFO L226 Difference]: Without dead ends: 44 [2018-10-23 10:04:02,931 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-23 10:04:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-23 10:04:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-23 10:04:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-23 10:04:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-23 10:04:02,948 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 18 [2018-10-23 10:04:02,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:04:02,949 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-23 10:04:02,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 10:04:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-23 10:04:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-23 10:04:02,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 10:04:02,951 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 10:04:02,951 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 10:04:02,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:04:02,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1000709048, now seen corresponding path program 1 times [2018-10-23 10:04:02,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 10:04:02,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:02,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 10:04:02,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 10:04:02,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 10:04:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 10:04:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-23 10:04:03,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 10:04:03,014 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 10:04:03,015 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-10-23 10:04:03,015 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [13], [17], [20], [22], [26], [30], [36], [39], [41], [44], [46], [47], [48], [49], [51], [52], [53], [54] [2018-10-23 10:04:03,017 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 10:04:03,017 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 10:04:03,293 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 10:04:03,294 INFO L272 AbstractInterpreter]: Visited 20 different actions 258 times. Merged at 9 different actions 90 times. Widened at 3 different actions 13 times. Found 11 fixpoints after 4 different actions. Largest state had 8 variables. [2018-10-23 10:04:03,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 10:04:03,335 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 10:04:03,446 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 71.79% of their original sizes. [2018-10-23 10:04:03,446 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 10:04:03,762 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 10:04:03,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 10:04:03,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2018-10-23 10:04:03,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 10:04:03,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 10:04:03,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 10:04:03,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-23 10:04:03,765 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 9 states. [2018-10-23 10:04:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 10:04:04,127 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-10-23 10:04:04,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 10:04:04,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-10-23 10:04:04,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 10:04:04,129 INFO L225 Difference]: With dead ends: 58 [2018-10-23 10:04:04,129 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 10:04:04,130 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-23 10:04:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 10:04:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 10:04:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 10:04:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 10:04:04,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-10-23 10:04:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 10:04:04,132 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 10:04:04,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 10:04:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 10:04:04,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 10:04:04,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 10:04:04,673 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 18 [2018-10-23 10:04:04,877 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-23 10:04:04,878 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:04:04,878 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 10:04:04,878 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-23 10:04:04,878 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-23 10:04:04,878 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 10:04:04,878 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-10-23 10:04:04,879 INFO L421 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~j~0))) (and (<= 0 .cse0) (<= (+ main_~i~0 1) main_~nlen~0) (<= .cse0 14) (<= (* 2 main_~nlen~0) 4294967294) (<= 0 (* 2 main_~i~0)))) [2018-10-23 10:04:04,879 INFO L421 ceAbstractionStarter]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (* 2 main_~j~0))) (and (<= 0 .cse0) (<= (+ main_~i~0 1) main_~nlen~0) (<= .cse0 14) (<= (* 2 main_~nlen~0) 4294967294) (<= 0 (* 2 main_~i~0)))) [2018-10-23 10:04:04,880 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-10-23 10:04:04,880 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 18) no Hoare annotation was computed. [2018-10-23 10:04:04,880 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 18) no Hoare annotation was computed. [2018-10-23 10:04:04,880 INFO L421 ceAbstractionStarter]: At program point L13-4(lines 13 18) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (* 2 main_~nlen~0) 4294967294) (<= 0 .cse0) (<= .cse0 4294967294) (<= main_~i~0 (+ main_~nlen~0 2147483648)))) [2018-10-23 10:04:04,880 INFO L425 ceAbstractionStarter]: For program point L13-5(lines 13 18) no Hoare annotation was computed. [2018-10-23 10:04:04,881 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-10-23 10:04:04,881 INFO L425 ceAbstractionStarter]: For program point L16(lines 14 17) no Hoare annotation was computed. [2018-10-23 10:04:04,881 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2018-10-23 10:04:04,881 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse0 (* 2 main_~j~0))) (and (<= .cse0 16) (<= 0 .cse0) (<= (+ main_~i~0 1) main_~nlen~0) (<= (* 2 main_~nlen~0) 4294967294) (<= 0 (* 2 main_~i~0)))) [2018-10-23 10:04:04,881 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-23 10:04:04,881 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-23 10:04:04,882 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-23 10:04:04,882 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-23 10:04:04,882 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-23 10:04:04,882 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-23 10:04:04,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:04:04 BoogieIcfgContainer [2018-10-23 10:04:04,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 10:04:04,893 INFO L168 Benchmark]: Toolchain (without parser) took 4855.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -584.5 MB). Peak memory consumption was 159.5 MB. Max. memory is 7.1 GB. [2018-10-23 10:04:04,894 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:04:04,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 10:04:04,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:04:04,897 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 10:04:04,897 INFO L168 Benchmark]: RCFGBuilder took 473.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-23 10:04:04,899 INFO L168 Benchmark]: TraceAbstraction took 4005.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 7.1 GB. [2018-10-23 10:04:04,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 473.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4005.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 7.1 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: 14]: Loop Invariant Derived loop invariant: (((2 * j <= 16 && 0 <= 2 * j) && i + 1 <= nlen) && 2 * nlen <= 4294967294) && 0 <= 2 * i - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((2 * nlen <= 4294967294 && 0 <= 2 * i) && 2 * i <= 4294967294) && i <= nlen + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 43 SDslu, 163 SDs, 0 SdLazy, 30 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9134615384615384 AbsIntWeakeningRatio, 0.5192307692307693 AbsIntAvgWeakeningVarsNumRemoved, 3.1923076923076925 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 28 NumberOfFragments, 104 HoareAnnotationTreeSize, 18 FomulaSimplifications, 784 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 310 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 27/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...