java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired01-BackwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:12:05,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:12:05,418 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:12:05,430 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:12:05,431 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:12:05,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:12:05,433 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:12:05,435 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:12:05,436 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:12:05,437 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:12:05,438 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:12:05,438 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:12:05,439 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:12:05,440 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:12:05,442 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:12:05,442 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:12:05,443 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:12:05,445 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:12:05,447 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:12:05,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:12:05,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:12:05,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:12:05,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 09:12:05,454 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 09:12:05,454 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 09:12:05,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 09:12:05,456 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 09:12:05,457 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 09:12:05,458 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 09:12:05,459 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 09:12:05,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 09:12:05,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 09:12:05,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 09:12:05,461 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 09:12:05,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 09:12:05,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 09:12:05,463 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 09:12:05,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:12:05,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:12:05,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:12:05,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:12:05,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 09:12:05,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:12:05,473 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:12:05,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:12:05,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:12:05,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:12:05,534 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:12:05,535 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:12:05,535 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired01-BackwardSuccess.bpl [2018-09-26 09:12:05,536 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/DivisibilityInterpolantRequired01-BackwardSuccess.bpl' [2018-09-26 09:12:05,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:12:05,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:12:05,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:12:05,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:12:05,578 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:12:05,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,617 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:12:05,618 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:12:05,618 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:12:05,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:12:05,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:12:05,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:12:05,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:12:05,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/1) ... [2018-09-26 09:12:05,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:12:05,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:12:05,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:12:05,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:12:05,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 09:12:05,727 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2018-09-26 09:12:05,727 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2018-09-26 09:12:05,945 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:12:05,947 INFO L202 PluginConnector]: Adding new model DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:12:05 BoogieIcfgContainer [2018-09-26 09:12:05,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:12:05,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:12:05,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:12:05,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:12:05,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:12:05" (1/2) ... [2018-09-26 09:12:05,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c93c42 and model type DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:12:05, skipping insertion in model container [2018-09-26 09:12:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:12:05" (2/2) ... [2018-09-26 09:12:05,956 INFO L112 eAbstractionObserver]: Analyzing ICFG DivisibilityInterpolantRequired01-BackwardSuccess.bpl [2018-09-26 09:12:05,968 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:12:05,978 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 09:12:06,022 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:12:06,023 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:12:06,023 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:12:06,024 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:12:06,024 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:12:06,024 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:12:06,024 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:12:06,025 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:12:06,025 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:12:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2018-09-26 09:12:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-09-26 09:12:06,050 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:12:06,051 INFO L375 BasicCegarLoop]: trace histogram [1, 1] [2018-09-26 09:12:06,052 INFO L423 AbstractCegarLoop]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:12:06,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:12:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 09:12:06,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:12:06,215 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:12:06,216 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-26 09:12:06,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 09:12:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 09:12:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 09:12:06,228 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2018-09-26 09:12:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:12:06,269 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2018-09-26 09:12:06,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 09:12:06,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-09-26 09:12:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:12:06,282 INFO L225 Difference]: With dead ends: 4 [2018-09-26 09:12:06,282 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 09:12:06,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 09:12:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 09:12:06,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 09:12:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 09:12:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 09:12:06,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2018-09-26 09:12:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:12:06,313 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 09:12:06,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 09:12:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 09:12:06,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 09:12:06,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 09:12:06,445 INFO L422 ceAbstractionStarter]: At program point L18-1(lines 18 20) the Hoare annotation is: (= 0 (mod proc_a 2)) [2018-09-26 09:12:06,445 INFO L422 ceAbstractionStarter]: At program point procErr0ASSERT_VIOLATIONASSERT(line 21) the Hoare annotation is: false [2018-09-26 09:12:06,445 INFO L422 ceAbstractionStarter]: At program point procEXIT(lines 14 23) the Hoare annotation is: (= 0 (mod proc_a 2)) [2018-09-26 09:12:06,446 INFO L429 ceAbstractionStarter]: At program point procENTRY(lines 14 23) the Hoare annotation is: true [2018-09-26 09:12:06,446 INFO L426 ceAbstractionStarter]: For program point procFINAL(lines 14 23) no Hoare annotation was computed. [2018-09-26 09:12:06,455 INFO L202 PluginConnector]: Adding new model DivisibilityInterpolantRequired01-BackwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:12:06 BoogieIcfgContainer [2018-09-26 09:12:06,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 09:12:06,457 INFO L168 Benchmark]: Toolchain (without parser) took 882.68 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-09-26 09:12:06,460 INFO L168 Benchmark]: Boogie PL CUP Parser 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. [2018-09-26 09:12:06,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.66 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. [2018-09-26 09:12:06,461 INFO L168 Benchmark]: Boogie Preprocessor took 21.34 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. [2018-09-26 09:12:06,462 INFO L168 Benchmark]: RCFGBuilder took 304.61 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. [2018-09-26 09:12:06,464 INFO L168 Benchmark]: TraceAbstraction took 507.48 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2018-09-26 09:12:06,473 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 0.19 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. * Boogie Procedure Inliner took 42.66 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 21.34 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 304.61 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 507.48 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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: 18]: Loop Invariant Derived loop invariant: 0 == a % 2 - ProcedureContractResult [Line: 14]: Procedure Contract for proc Derived contract for procedure proc: 0 == a % 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 12 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s PdrRuntime, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DivisibilityInterpolantRequired01-BackwardSuccess.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_09-12-06-510.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/DivisibilityInterpolantRequired01-BackwardSuccess.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_09-12-06-510.csv Received shutdown request...