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-c30ebe1 [2018-12-17 14:29:47,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-17 14:29:47,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-17 14:29:47,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-17 14:29:47,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-17 14:29:47,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-17 14:29:47,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-17 14:29:47,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-17 14:29:47,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-17 14:29:47,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-17 14:29:47,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-12-17 14:29:47,409 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 [2018-12-17 14:29:47,429 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-17 14:29:47,430 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-17 14:29:47,431 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-17 14:29:47,431 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-17 14:29:47,431 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-17 14:29:47,431 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-17 14:29:47,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-17 14:29:47,432 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-17 14:29:47,432 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2018-12-17 14:29:47,432 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-17 14:29:47,432 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-17 14:29:47,433 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-17 14:29:47,433 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-17 14:29:47,434 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-17 14:29:47,434 INFO L133 SettingsManager]: * Use SBE=true [2018-12-17 14:29:47,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-17 14:29:47,434 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-17 14:29:47,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-17 14:29:47,435 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-17 14:29:47,435 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-17 14:29:47,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-17 14:29:47,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-17 14:29:47,436 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-17 14:29:47,436 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-17 14:29:47,436 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-17 14:29:47,436 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-17 14:29:47,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-17 14:29:47,437 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-17 14:29:47,437 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-17 14:29:47,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-17 14:29:47,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-17 14:29:47,438 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-17 14:29:47,438 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-17 14:29:47,438 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-17 14:29:47,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-17 14:29:47,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-17 14:29:47,439 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-17 14:29:47,439 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-17 14:29:47,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-17 14:29:47,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-17 14:29:47,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-17 14:29:47,502 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-17 14:29:47,502 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-17 14:29:47,505 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2018-12-17 14:29:47,506 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2018-12-17 14:29:47,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-17 14:29:47,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-17 14:29:47,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-17 14:29:47,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-17 14:29:47,556 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-17 14:29:47,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,596 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-17 14:29:47,596 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-17 14:29:47,597 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-17 14:29:47,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-17 14:29:47,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-17 14:29:47,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-17 14:29:47,601 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-17 14:29:47,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/1) ... [2018-12-17 14:29:47,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-17 14:29:47,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-17 14:29:47,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-17 14:29:47,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-17 14:29:47,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (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 [2018-12-17 14:29:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-17 14:29:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-17 14:29:48,053 INFO L272 CfgBuilder]: Using library mode [2018-12-17 14:29:48,053 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-17 14:29:48,054 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:29:48 BoogieIcfgContainer [2018-12-17 14:29:48,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-17 14:29:48,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-17 14:29:48,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-17 14:29:48,059 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-17 14:29:48,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.12 02:29:47" (1/2) ... [2018-12-17 14:29:48,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cce2373 and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:29:48, skipping insertion in model container [2018-12-17 14:29:48,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:29:48" (2/2) ... [2018-12-17 14:29:48,062 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2018-12-17 14:29:48,073 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-17 14:29:48,082 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-17 14:29:48,101 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-17 14:29:48,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-17 14:29:48,137 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-17 14:29:48,137 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-17 14:29:48,137 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-17 14:29:48,137 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-17 14:29:48,138 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-17 14:29:48,138 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-17 14:29:48,138 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-17 14:29:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-12-17 14:29:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-17 14:29:48,162 INFO L394 BasicCegarLoop]: Found error trace [2018-12-17 14:29:48,163 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-17 14:29:48,166 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-17 14:29:48,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-17 14:29:48,173 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-12-17 14:29:48,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-17 14:29:48,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-17 14:29:48,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-17 14:29:48,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-17 14:29:48,231 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-17 14:29:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-17 14:29:48,440 INFO L273 TraceCheckUtils]: 0: Hoare triple {9#true} i := 0; {11#(<= main_i 0)} is VALID [2018-12-17 14:29:48,465 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 [2018-12-17 14:29:48,466 INFO L273 TraceCheckUtils]: 2: Hoare triple {10#false} assume !(a[q] == 5); {10#false} is VALID [2018-12-17 14:29:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-17 14:29:48,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-17 14:29:48,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-17 14:29:48,476 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-17 14:29:48,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-17 14:29:48,484 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-17 14:29:48,495 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2018-12-17 14:29:48,516 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-17 14:29:48,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-17 14:29:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-17 14:29:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-17 14:29:48,527 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-12-17 14:29:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-17 14:29:48,614 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-12-17 14:29:48,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-17 14:29:48,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-12-17 14:29:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-17 14:29:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-17 14:29:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-17 14:29:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-17 14:29:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-17 14:29:48,624 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 11 transitions. [2018-12-17 14:29:48,694 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-17 14:29:48,704 INFO L225 Difference]: With dead ends: 11 [2018-12-17 14:29:48,704 INFO L226 Difference]: Without dead ends: 5 [2018-12-17 14:29:48,708 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 [2018-12-17 14:29:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-12-17 14:29:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-17 14:29:48,739 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-12-17 14:29:48,740 INFO L82 GeneralOperation]: Start isEquivalent. First operand 5 states. Second operand 5 states. [2018-12-17 14:29:48,741 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2018-12-17 14:29:48,741 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2018-12-17 14:29:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-17 14:29:48,742 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-17 14:29:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-17 14:29:48,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-17 14:29:48,743 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-17 14:29:48,743 INFO L74 IsIncluded]: Start isIncluded. First operand 5 states. Second operand 5 states. [2018-12-17 14:29:48,743 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 5 states. [2018-12-17 14:29:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-17 14:29:48,745 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2018-12-17 14:29:48,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-17 14:29:48,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-17 14:29:48,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-12-17 14:29:48,746 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-12-17 14:29:48,746 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-12-17 14:29:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-17 14:29:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-12-17 14:29:48,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-12-17 14:29:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-17 14:29:48,749 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-12-17 14:29:48,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-17 14:29:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-12-17 14:29:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-17 14:29:48,750 INFO L394 BasicCegarLoop]: Found error trace [2018-12-17 14:29:48,750 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-12-17 14:29:48,751 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-17 14:29:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-17 14:29:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-12-17 14:29:48,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-17 14:29:48,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-17 14:29:48,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-17 14:29:48,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-17 14:29:48,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-17 14:29:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-17 14:29:48,870 INFO L273 TraceCheckUtils]: 0: Hoare triple {44#true} i := 0; {46#(<= main_i 0)} is VALID [2018-12-17 14:29:48,890 INFO L273 TraceCheckUtils]: 1: Hoare triple {46#(<= main_i 0)} assume i <= 1000;i := i + 1; {47#(<= main_i 1)} is VALID [2018-12-17 14:29:48,900 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 [2018-12-17 14:29:48,900 INFO L273 TraceCheckUtils]: 3: Hoare triple {45#false} assume !(a[q] == 5); {45#false} is VALID [2018-12-17 14:29:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-17 14:29:48,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-17 14:29:48,901 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-17 14:29:48,902 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 5 with the following transitions: [2018-12-17 14:29:48,904 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [7] [2018-12-17 14:29:48,965 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-17 14:29:48,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-17 14:29:52,095 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-17 14:29:52,097 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. [2018-12-17 14:29:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-17 14:29:52,103 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-17 14:29:53,471 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-12-17 14:29:53,495 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2018-12-17 14:29:55,022 INFO L420 sIntCurrentIteration]: We unified 3 AI predicates to 3 [2018-12-17 14:29:55,310 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-17 14:29:55,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-17 14:29:55,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2018-12-17 14:29:55,311 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-17 14:29:55,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-12-17 14:29:55,313 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-12-17 14:29:55,313 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2018-12-17 14:29:55,323 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-12-17 14:29:55,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-17 14:29:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-17 14:29:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-17 14:29:55,325 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-12-17 14:29:55,337 WARN L207 ngHoareTripleChecker]: Soundness check inconclusive for the following hoare triple [2018-12-17 14:29:55,338 WARN L212 ngHoareTripleChecker]: Expected: UNKNOWN Actual: INVALID [2018-12-17 14:29:55,338 WARN L214 ngHoareTripleChecker]: Solver was "Z3" in version "4.8.3" [2018-12-17 14:29:55,339 WARN L218 ngHoareTripleChecker]: -- [2018-12-17 14:29:55,339 WARN L219 ngHoareTripleChecker]: Pre: {86#(<= (- (- c_main_i) c_main_i) 0)} [2018-12-17 14:29:55,340 WARN L223 ngHoareTripleChecker]: Action: assume i <= 1000;i := i + 1; [2018-12-17 14:29:55,341 WARN L184 hOps$ForEachOp$OfRef]: ActionStr: (and (= c_main_i_primed (+ c_main_i 1)) (<= c_main_i 1000)) [2018-12-17 14:29:55,341 WARN L225 ngHoareTripleChecker]: Post: {87#false} [2018-12-17 14:29:55,342 WARN L235 ngHoareTripleChecker]: -- [2018-12-17 14:29:55,342 WARN L237 ngHoareTripleChecker]: unsat core generation is disabled, enable it to get more details [2018-12-17 14:29:55,342 FATAL L613 ntHoareTripleChecker]: Check was UNKNOWN but should have been INVALID [2018-12-17 14:29:55,343 FATAL L616 ntHoareTripleChecker]: PreS: {#1{Arrays: {[main_a] -> [-inf_0] v_455 [inf_0], }, Substate: {ints: {main_i = [0; inf]}, 4 vars top, }}} [2018-12-17 14:29:55,343 FATAL L621 ntHoareTripleChecker]: (and (= c_main_i_primed (+ c_main_i 1)) (<= c_main_i 1000)) (assume i <= 1000;i := i + 1;) [2018-12-17 14:29:55,343 FATAL L622 ntHoareTripleChecker]: Post: {#1{Arrays: {}, Substate: false}} [2018-12-17 14:29:55,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-17 14:29:55,345 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid hoare triple check at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:699) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-17 14:29:55,349 INFO L168 Benchmark]: Toolchain (without parser) took 7795.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.4 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -678.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-12-17 14:29:55,351 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.32 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. [2018-12-17 14:29:55,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.05 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. [2018-12-17 14:29:55,353 INFO L168 Benchmark]: Boogie Preprocessor took 32.29 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. [2018-12-17 14:29:55,353 INFO L168 Benchmark]: RCFGBuilder took 420.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-17 14:29:55,354 INFO L168 Benchmark]: TraceAbstraction took 7293.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.4 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -700.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-12-17 14:29:55,358 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 0.32 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 44.05 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 32.29 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 420.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7293.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.4 MB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -700.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid hoare triple check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid hoare triple check: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:254) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...