java -ea -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/codeblockAssertOrder01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-a9d37a5-m [2019-02-28 13:42:14,773 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-28 13:42:14,775 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-28 13:42:14,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-28 13:42:14,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-28 13:42:14,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-28 13:42:14,797 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-28 13:42:14,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-28 13:42:14,805 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-28 13:42:14,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-28 13:42:14,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-02-28 13:42:14,840 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 [2019-02-28 13:42:14,852 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-28 13:42:14,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-28 13:42:14,853 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-28 13:42:14,854 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-28 13:42:14,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-28 13:42:14,854 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-28 13:42:14,854 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-28 13:42:14,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-28 13:42:14,855 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-28 13:42:14,855 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-28 13:42:14,855 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-28 13:42:14,855 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-28 13:42:14,855 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-28 13:42:14,856 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-28 13:42:14,856 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-28 13:42:14,856 INFO L133 SettingsManager]: * Use SBE=true [2019-02-28 13:42:14,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-28 13:42:14,857 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-28 13:42:14,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-28 13:42:14,857 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-28 13:42:14,857 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-28 13:42:14,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-28 13:42:14,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-28 13:42:14,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-28 13:42:14,858 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-28 13:42:14,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-28 13:42:14,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-28 13:42:14,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-28 13:42:14,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-28 13:42:14,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-28 13:42:14,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:42:14,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-28 13:42:14,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-28 13:42:14,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-28 13:42:14,860 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-28 13:42:14,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-28 13:42:14,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in [2019-02-28 13:42:14,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-28 13:42:14,861 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-28 13:42:14,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-28 13:42:14,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-28 13:42:14,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-28 13:42:14,915 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-28 13:42:14,915 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-28 13:42:14,916 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2019-02-28 13:42:14,916 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2019-02-28 13:42:14,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-28 13:42:14,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-28 13:42:14,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-28 13:42:14,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-28 13:42:14,960 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-28 13:42:14,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:14,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:14,992 WARN L165 Inliner]: Program contained no entry procedure! [2019-02-28 13:42:14,993 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-02-28 13:42:14,993 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-02-28 13:42:14,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-28 13:42:14,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-28 13:42:14,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-28 13:42:14,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-28 13:42:15,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/1) ... [2019-02-28 13:42:15,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-28 13:42:15,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-28 13:42:15,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-28 13:42:15,022 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-28 13:42:15,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (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:16092 -smt2 -in -t:200000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:16092 -smt2 -in -t:200000 [2019-02-28 13:42:15,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-02-28 13:42:15,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-02-28 13:42:15,485 INFO L278 CfgBuilder]: Using library mode [2019-02-28 13:42:15,486 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-02-28 13:42:15,487 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:42:15 BoogieIcfgContainer [2019-02-28 13:42:15,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-28 13:42:15,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-02-28 13:42:15,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-02-28 13:42:15,491 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-02-28 13:42:15,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.02 01:42:14" (1/2) ... [2019-02-28 13:42:15,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6dad75 and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.02 01:42:15, skipping insertion in model container [2019-02-28 13:42:15,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.02 01:42:15" (2/2) ... [2019-02-28 13:42:15,495 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2019-02-28 13:42:15,504 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-02-28 13:42:15,512 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-02-28 13:42:15,528 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-02-28 13:42:15,561 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-02-28 13:42:15,561 INFO L383 AbstractCegarLoop]: Hoare is true [2019-02-28 13:42:15,561 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-02-28 13:42:15,562 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-02-28 13:42:15,562 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-02-28 13:42:15,562 INFO L387 AbstractCegarLoop]: Difference is false [2019-02-28 13:42:15,562 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-02-28 13:42:15,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-02-28 13:42:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-02-28 13:42:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-02-28 13:42:15,581 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:42:15,582 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-02-28 13:42:15,584 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:42:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:42:15,590 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-02-28 13:42:15,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:42:15,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:42:15,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:42:15,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:42:15,640 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:42:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:42:15,841 INFO L273 TraceCheckUtils]: 0: Hoare triple {9#true} i := 0; {11#(<= main_i 0)} is VALID [2019-02-28 13:42:15,850 INFO L273 TraceCheckUtils]: 1: Hoare triple {11#(<= main_i 0)} assume !(i <= 1000);a := a[p := 5];assume p > 41 && p < 43;assume q > 41 && q < 43; {10#false} is VALID [2019-02-28 13:42:15,851 INFO L273 TraceCheckUtils]: 2: Hoare triple {10#false} assume !(a[q] == 5); {10#false} is VALID [2019-02-28 13:42:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:42:15,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-02-28 13:42:15,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-02-28 13:42:15,855 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 13:42:15,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-02-28 13:42:15,861 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-28 13:42:15,864 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2019-02-28 13:42:15,911 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:42:15,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-02-28 13:42:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-02-28 13:42:15,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:42:15,928 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-02-28 13:42:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:16,042 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-02-28 13:42:16,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-02-28 13:42:16,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-02-28 13:42:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 13:42:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:42:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-02-28 13:42:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-02-28 13:42:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-02-28 13:42:16,054 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 11 transitions. [2019-02-28 13:42:16,105 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:42:16,114 INFO L225 Difference]: With dead ends: 11 [2019-02-28 13:42:16,114 INFO L226 Difference]: Without dead ends: 5 [2019-02-28 13:42:16,117 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-02-28 13:42:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-02-28 13:42:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-02-28 13:42:16,187 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-28 13:42:16,188 INFO L82 GeneralOperation]: Start isEquivalent. First operand 5 states. Second operand 5 states. [2019-02-28 13:42:16,189 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2019-02-28 13:42:16,189 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2019-02-28 13:42:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:16,191 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-02-28 13:42:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-02-28 13:42:16,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:42:16,192 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:42:16,192 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2019-02-28 13:42:16,192 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2019-02-28 13:42:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:16,194 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-02-28 13:42:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-02-28 13:42:16,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:42:16,194 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:42:16,195 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-28 13:42:16,195 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-28 13:42:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-02-28 13:42:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-02-28 13:42:16,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-02-28 13:42:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 13:42:16,199 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-02-28 13:42:16,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-02-28 13:42:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-02-28 13:42:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-02-28 13:42:16,200 INFO L394 BasicCegarLoop]: Found error trace [2019-02-28 13:42:16,200 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-02-28 13:42:16,201 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-02-28 13:42:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:42:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-02-28 13:42:16,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-02-28 13:42:16,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:42:16,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-02-28 13:42:16,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-02-28 13:42:16,204 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-02-28 13:42:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-02-28 13:42:16,451 INFO L273 TraceCheckUtils]: 0: Hoare triple {44#true} i := 0; {46#(<= main_i 0)} is VALID [2019-02-28 13:42:16,452 INFO L273 TraceCheckUtils]: 1: Hoare triple {46#(<= main_i 0)} assume i <= 1000;i := i + 1; {47#(<= main_i 1)} is VALID [2019-02-28 13:42:16,458 INFO L273 TraceCheckUtils]: 2: Hoare triple {47#(<= main_i 1)} assume !(i <= 1000);a := a[p := 5];assume p > 41 && p < 43;assume q > 41 && q < 43; {45#false} is VALID [2019-02-28 13:42:16,458 INFO L273 TraceCheckUtils]: 3: Hoare triple {45#false} assume !(a[q] == 5); {45#false} is VALID [2019-02-28 13:42:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-02-28 13:42:16,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-02-28 13:42:16,459 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-02-28 13:42:16,460 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2019-02-28 13:42:16,462 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [7] [2019-02-28 13:42:16,533 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2019-02-28 13:42:16,533 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-28 13:42:20,129 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-02-28 13:42:20,130 INFO L272 AbstractInterpreter]: Visited 4 different actions 28 times. Merged at 1 different actions 12 times. Widened at 1 different actions 8 times. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2019-02-28 13:42:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-02-28 13:42:20,214 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-02-28 13:42:21,130 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-02-28 13:42:21,556 INFO L420 sIntCurrentIteration]: We unified 3 AI predicates to 3 [2019-02-28 13:42:22,063 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-02-28 13:42:22,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-02-28 13:42:22,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2019-02-28 13:42:22,064 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-02-28 13:42:22,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-02-28 13:42:22,067 INFO L84 Accepts]: Finished accepts. word is accepted. [2019-02-28 13:42:22,067 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2019-02-28 13:42:22,074 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:42:22,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-02-28 13:42:22,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-02-28 13:42:22,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-02-28 13:42:22,076 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-02-28 13:42:22,552 WARN L214 ngHoareTripleChecker]: Soundness check failed for the following hoare triple [2019-02-28 13:42:22,553 WARN L217 ngHoareTripleChecker]: Expected: UNKNOWN Actual: INVALID [2019-02-28 13:42:22,556 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2019-02-28 13:42:22,557 WARN L223 ngHoareTripleChecker]: -- [2019-02-28 13:42:22,557 WARN L224 ngHoareTripleChecker]: Pre: {77#(<= (- (- c_main_i) c_main_i) 0)} [2019-02-28 13:42:22,557 WARN L228 ngHoareTripleChecker]: Action: assume i <= 1000;i := i + 1; [2019-02-28 13:42:22,558 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (= c_main_i_primed (+ c_main_i 1)) (<= c_main_i 1000)) [2019-02-28 13:42:22,558 WARN L230 ngHoareTripleChecker]: Post: {78#false} [2019-02-28 13:42:22,558 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2019-02-28 13:42:22,559 WARN L268 ngHoareTripleChecker]: -- [2019-02-28 13:42:22,560 WARN L269 ngHoareTripleChecker]: Simplified triple [2019-02-28 13:42:22,563 WARN L270 ngHoareTripleChecker]: Pre: {77#(<= (- (- main_i) main_i) 0)} [2019-02-28 13:42:22,563 WARN L274 ngHoareTripleChecker]: Action: assume i <= 1000;i := i + 1; [2019-02-28 13:42:22,564 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (= c_main_i_primed (+ c_main_i 1)) (<= c_main_i 1000)) [2019-02-28 13:42:22,567 WARN L276 ngHoareTripleChecker]: Post: {78#false} [2019-02-28 13:42:22,568 WARN L620 ntHoareTripleChecker]: -- [2019-02-28 13:42:22,568 WARN L621 ntHoareTripleChecker]: Abstract states [2019-02-28 13:42:22,569 WARN L623 ntHoareTripleChecker]: PreS: {#1{Arrays: {[main_a] -> [-inf_0] v_461 [inf_0], }, Substate: {ints: {main_i = [0; inf]}, 4 vars top, }}} [2019-02-28 13:42:22,569 WARN L628 ntHoareTripleChecker]: (and (= c_main_i_primed (+ c_main_i 1)) (<= c_main_i 1000)) (assume i <= 1000;i := i + 1;) [2019-02-28 13:42:22,569 WARN L629 ntHoareTripleChecker]: Post: {#1{Arrays: {}, Substate: false}} [2019-02-28 13:42:22,570 WARN L630 ntHoareTripleChecker]: -- [2019-02-28 13:42:23,462 WARN L214 ngHoareTripleChecker]: Soundness check failed for the following hoare triple [2019-02-28 13:42:23,463 WARN L217 ngHoareTripleChecker]: Expected: UNKNOWN Actual: INVALID [2019-02-28 13:42:23,464 WARN L219 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2019-02-28 13:42:23,464 WARN L223 ngHoareTripleChecker]: -- [2019-02-28 13:42:23,464 WARN L224 ngHoareTripleChecker]: Pre: {83#(<= (- (- c_main_i) c_main_i) 0)} [2019-02-28 13:42:23,465 WARN L228 ngHoareTripleChecker]: Action: assume !(i <= 1000);a := a[p := 5];assume p > 41 && p < 43;assume q > 41 && q < 43; [2019-02-28 13:42:23,465 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (not (<= c_main_i 1000)) (< 41 c_main_p) (< 41 c_main_q) (= c_main_a_primed (store c_main_a c_main_p 5)) (< c_main_p 43) (< c_main_q 43)) [2019-02-28 13:42:23,465 WARN L230 ngHoareTripleChecker]: Post: {84#false} [2019-02-28 13:42:23,465 WARN L263 ngHoareTripleChecker]: unsat core / model generation is disabled, enable it to get more details [2019-02-28 13:42:23,466 WARN L268 ngHoareTripleChecker]: -- [2019-02-28 13:42:23,466 WARN L269 ngHoareTripleChecker]: Simplified triple [2019-02-28 13:42:23,500 WARN L270 ngHoareTripleChecker]: Pre: {83#(<= (- (- main_i) main_i) 0)} [2019-02-28 13:42:23,500 WARN L274 ngHoareTripleChecker]: Action: assume !(i <= 1000);a := a[p := 5];assume p > 41 && p < 43;assume q > 41 && q < 43; [2019-02-28 13:42:23,501 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (not (<= c_main_i 1000)) (< 41 c_main_p) (< 41 c_main_q) (= c_main_a_primed (store c_main_a c_main_p 5)) (< c_main_p 43) (< c_main_q 43)) [2019-02-28 13:42:23,538 WARN L276 ngHoareTripleChecker]: Post: {84#false} [2019-02-28 13:42:23,538 WARN L620 ntHoareTripleChecker]: -- [2019-02-28 13:42:23,538 WARN L621 ntHoareTripleChecker]: Abstract states [2019-02-28 13:42:23,539 WARN L623 ntHoareTripleChecker]: PreS: {#1{Arrays: {[main_a] -> [-inf_0] v_469 [inf_0], }, Substate: {ints: {main_i = [0; inf]}, 4 vars top, }}} [2019-02-28 13:42:23,539 WARN L628 ntHoareTripleChecker]: (and (not (<= c_main_i 1000)) (< 41 c_main_p) (< 41 c_main_q) (= c_main_a_primed (store c_main_a c_main_p 5)) (< c_main_p 43) (< c_main_q 43)) (assume !(i <= 1000);a := a[p := 5];assume p > 41 && p < 43;assume q > 41 && q < 43;) [2019-02-28 13:42:23,539 WARN L629 ntHoareTripleChecker]: Post: {#1{Arrays: {}, Substate: false}} [2019-02-28 13:42:23,539 WARN L630 ntHoareTripleChecker]: -- [2019-02-28 13:42:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:23,556 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-02-28 13:42:23,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-02-28 13:42:23,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-02-28 13:42:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-02-28 13:42:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-02-28 13:42:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2019-02-28 13:42:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-02-28 13:42:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2019-02-28 13:42:23,558 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 4 transitions. [2019-02-28 13:42:23,611 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2019-02-28 13:42:23,611 INFO L225 Difference]: With dead ends: 5 [2019-02-28 13:42:23,611 INFO L226 Difference]: Without dead ends: 0 [2019-02-28 13:42:23,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-02-28 13:42:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-02-28 13:42:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-02-28 13:42:23,613 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2019-02-28 13:42:23,613 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2019-02-28 13:42:23,613 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2019-02-28 13:42:23,613 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2019-02-28 13:42:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:23,614 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-02-28 13:42:23,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-28 13:42:23,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:42:23,614 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:42:23,614 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2019-02-28 13:42:23,614 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2019-02-28 13:42:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-02-28 13:42:23,615 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-02-28 13:42:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-28 13:42:23,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:42:23,615 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2019-02-28 13:42:23,615 INFO L88 GeneralOperation]: Finished isEquivalent. [2019-02-28 13:42:23,616 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2019-02-28 13:42:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-02-28 13:42:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-02-28 13:42:23,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-02-28 13:42:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-02-28 13:42:23,616 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-02-28 13:42:23,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-02-28 13:42:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-02-28 13:42:23,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-02-28 13:42:23,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-02-28 13:42:23,651 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 21) no Hoare annotation was computed. [2019-02-28 13:42:23,652 INFO L444 ceAbstractionStarter]: At program point L15-1(lines 15 17) the Hoare annotation is: (<= 0 (* 2 main_i)) [2019-02-28 13:42:23,652 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 10 22) no Hoare annotation was computed. [2019-02-28 13:42:23,652 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-02-28 13:42:23,652 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-02-28 13:42:23,652 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-02-28 13:42:23,653 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2019-02-28 13:42:23,654 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2019-02-28 13:42:23,654 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2019-02-28 13:42:23,654 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2019-02-28 13:42:23,654 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2019-02-28 13:42:23,654 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2019-02-28 13:42:23,658 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.02 01:42:23 BoogieIcfgContainer [2019-02-28 13:42:23,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-02-28 13:42:23,660 INFO L168 Benchmark]: Toolchain (without parser) took 8701.96 ms. Allocated memory was 140.5 MB in the beginning and 309.9 MB in the end (delta: 169.3 MB). Free memory was 108.0 MB in the beginning and 250.1 MB in the end (delta: -142.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-02-28 13:42:23,662 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory is still 109.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-28 13:42:23,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 140.5 MB. Free memory was 108.0 MB in the beginning and 106.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-02-28 13:42:23,663 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 140.5 MB. Free memory was 106.0 MB in the beginning and 104.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-02-28 13:42:23,664 INFO L168 Benchmark]: RCFGBuilder took 465.18 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 95.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-02-28 13:42:23,665 INFO L168 Benchmark]: TraceAbstraction took 8170.79 ms. Allocated memory was 140.5 MB in the beginning and 309.9 MB in the end (delta: 169.3 MB). Free memory was 94.9 MB in the beginning and 250.1 MB in the end (delta: -155.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-02-28 13:42:23,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory is still 109.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 140.5 MB. Free memory was 108.0 MB in the beginning and 106.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 140.5 MB. Free memory was 106.0 MB in the beginning and 104.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.18 ms. Allocated memory is still 140.5 MB. Free memory was 104.9 MB in the beginning and 95.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8170.79 ms. Allocated memory was 140.5 MB in the beginning and 309.9 MB in the end (delta: 169.3 MB). Free memory was 94.9 MB in the beginning and 250.1 MB in the end (delta: -155.2 MB). Peak memory consumption was 14.1 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: 15]: Loop Invariant Derived loop invariant: 0 <= 2 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 5 HoareAnnotationTreeSize, 1 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...