java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired02-ForwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 19:26:21,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 19:26:21,431 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 19:26:21,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-12-03 19:26:21,503 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2018-12-03 19:26:21,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 19:26:21,531 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 19:26:21,532 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 19:26:21,535 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 19:26:21,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 19:26:21,535 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 19:26:21,535 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 19:26:21,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 19:26:21,536 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 19:26:21,536 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-03 19:26:21,536 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 19:26:21,536 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 19:26:21,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 19:26:21,537 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 19:26:21,537 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 19:26:21,541 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 19:26:21,541 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 19:26:21,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 19:26:21,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 19:26:21,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 19:26:21,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 19:26:21,546 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 19:26:21,546 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 19:26:21,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 19:26:21,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 19:26:21,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 19:26:21,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 19:26:21,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 19:26:21,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 19:26:21,548 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 19:26:21,604 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 19:26:21,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 19:26:21,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 19:26:21,626 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 19:26:21,627 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 19:26:21,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired02-ForwardSuccess.bpl [2018-12-03 19:26:21,628 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired02-ForwardSuccess.bpl' [2018-12-03 19:26:21,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 19:26:21,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 19:26:21,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 19:26:21,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 19:26:21,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 19:26:21,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,708 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 19:26:21,708 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 19:26:21,708 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 19:26:21,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 19:26:21,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 19:26:21,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 19:26:21,713 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 19:26:21,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... [2018-12-03 19:26:21,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 19:26:21,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 19:26:21,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 19:26:21,741 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 19:26:21,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-12-03 19:26:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2018-12-03 19:26:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2018-12-03 19:26:22,018 INFO L272 CfgBuilder]: Using library mode [2018-12-03 19:26:22,018 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 19:26:22,019 INFO L202 PluginConnector]: Adding new model DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:26:22 BoogieIcfgContainer [2018-12-03 19:26:22,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 19:26:22,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 19:26:22,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 19:26:22,023 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 19:26:22,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 07:26:21" (1/2) ... [2018-12-03 19:26:22,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66523cd0 and model type DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:26:22, skipping insertion in model container [2018-12-03 19:26:22,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:26:22" (2/2) ... [2018-12-03 19:26:22,027 INFO L112 eAbstractionObserver]: Analyzing ICFG DivisibilityInterpolantRequired02-ForwardSuccess.bpl [2018-12-03 19:26:22,039 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 19:26:22,049 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 19:26:22,068 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 19:26:22,109 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 19:26:22,109 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 19:26:22,109 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 19:26:22,110 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 19:26:22,110 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 19:26:22,110 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 19:26:22,110 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 19:26:22,110 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 19:26:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-03 19:26:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 19:26:22,133 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 19:26:22,134 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 19:26:22,136 INFO L423 AbstractCegarLoop]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 19:26:22,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 19:26:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2018-12-03 19:26:22,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 19:26:22,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:26:22,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 19:26:22,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 19:26:22,204 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 19:26:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 19:26:22,435 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-12-03 19:26:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 19:26:22,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 19:26:22,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 19:26:22,442 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 19:26:22,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 19:26:22,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 19:26:22,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:26:22,486 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-03 19:26:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 19:26:22,564 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-03 19:26:22,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 19:26:22,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 19:26:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 19:26:22,575 INFO L225 Difference]: With dead ends: 5 [2018-12-03 19:26:22,575 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 19:26:22,579 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 19:26:22,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 19:26:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 19:26:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 19:26:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 19:26:22,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2018-12-03 19:26:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 19:26:22,604 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 19:26:22,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 19:26:22,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 19:26:22,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 19:26:22,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 19:26:22,685 INFO L444 ceAbstractionStarter]: At program point L16-1(lines 16 18) the Hoare annotation is: (let ((.cse0 (div proc_a 2))) (or (<= proc_a (* 2 .cse0)) (< 3 .cse0))) [2018-12-03 19:26:22,685 INFO L448 ceAbstractionStarter]: For program point procEXIT(lines 12 20) no Hoare annotation was computed. [2018-12-03 19:26:22,685 INFO L448 ceAbstractionStarter]: For program point procErr0ASSERT_VIOLATIONASSERT(line 19) no Hoare annotation was computed. [2018-12-03 19:26:22,685 INFO L448 ceAbstractionStarter]: For program point procENTRY(lines 12 20) no Hoare annotation was computed. [2018-12-03 19:26:22,686 INFO L448 ceAbstractionStarter]: For program point procFINAL(lines 12 20) no Hoare annotation was computed. [2018-12-03 19:26:22,694 INFO L202 PluginConnector]: Adding new model DivisibilityInterpolantRequired02-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:26:22 BoogieIcfgContainer [2018-12-03 19:26:22,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 19:26:22,696 INFO L168 Benchmark]: Toolchain (without parser) took 1027.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-12-03 19:26:22,697 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-12-03 19:26:22,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.66 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. [2018-12-03 19:26:22,699 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 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. [2018-12-03 19:26:22,700 INFO L168 Benchmark]: RCFGBuilder took 277.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 19:26:22,701 INFO L168 Benchmark]: TraceAbstraction took 674.97 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2018-12-03 19:26:22,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 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. * Boogie Procedure Inliner took 41.66 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. * Boogie Preprocessor took 28.14 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. * RCFGBuilder took 277.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 674.97 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: a <= 2 * (a / 2) || 3 < a / 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 13 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...