java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_camel.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1ae3202 [2019-03-04 16:23:48,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-03-04 16:23:48,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-03-04 16:23:48,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-03-04 16:23:48,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-03-04 16:23:48,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-03-04 16:23:48,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-03-04 16:23:48,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-03-04 16:23:48,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-03-04 16:23:48,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-03-04 16:23:48,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-03-04 16:23:48,808 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_camel.epf [2019-03-04 16:23:48,835 INFO L110 SettingsManager]: Loading preferences was successful [2019-03-04 16:23:48,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-03-04 16:23:48,839 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-03-04 16:23:48,839 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-03-04 16:23:48,840 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-03-04 16:23:48,842 INFO L133 SettingsManager]: * User list type=DISABLED [2019-03-04 16:23:48,842 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-03-04 16:23:48,842 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-03-04 16:23:48,842 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-03-04 16:23:48,843 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-03-04 16:23:48,843 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-03-04 16:23:48,843 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-03-04 16:23:48,843 INFO L133 SettingsManager]: * Interval Domain=false [2019-03-04 16:23:48,844 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-03-04 16:23:48,844 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-03-04 16:23:48,844 INFO L133 SettingsManager]: * Use SBE=true [2019-03-04 16:23:48,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-03-04 16:23:48,845 INFO L133 SettingsManager]: * sizeof long=4 [2019-03-04 16:23:48,845 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-03-04 16:23:48,845 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-03-04 16:23:48,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-03-04 16:23:48,845 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-03-04 16:23:48,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-03-04 16:23:48,846 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-03-04 16:23:48,846 INFO L133 SettingsManager]: * sizeof long double=12 [2019-03-04 16:23:48,846 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-03-04 16:23:48,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-03-04 16:23:48,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-03-04 16:23:48,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-03-04 16:23:48,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-03-04 16:23:48,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-03-04 16:23:48,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-03-04 16:23:48,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-03-04 16:23:48,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-03-04 16:23:48,850 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-03-04 16:23:48,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-03-04 16:23:48,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-03-04 16:23:48,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-03-04 16:23:48,851 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-03-04 16:23:48,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-03-04 16:23:48,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-03-04 16:23:48,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-03-04 16:23:48,911 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-03-04 16:23:48,912 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-03-04 16:23:48,913 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl [2019-03-04 16:23:48,913 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/codeblockAssertOrder01.bpl' [2019-03-04 16:23:48,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-03-04 16:23:48,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-03-04 16:23:48,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-03-04 16:23:48,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-03-04 16:23:48,955 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-03-04 16:23:48,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:48,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:48,987 WARN L165 Inliner]: Program contained no entry procedure! [2019-03-04 16:23:48,987 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-03-04 16:23:48,987 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-03-04 16:23:48,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-03-04 16:23:48,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-03-04 16:23:48,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-03-04 16:23:48,990 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-03-04 16:23:49,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/1) ... [2019-03-04 16:23:49,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-03-04 16:23:49,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-03-04 16:23:49,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-03-04 16:23:49,022 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-03-04 16:23:49,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (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 [2019-03-04 16:23:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-03-04 16:23:49,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-03-04 16:23:49,311 INFO L278 CfgBuilder]: Using library mode [2019-03-04 16:23:49,312 INFO L286 CfgBuilder]: Removed 0 assue(true) statements. [2019-03-04 16:23:49,314 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:23:49 BoogieIcfgContainer [2019-03-04 16:23:49,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-03-04 16:23:49,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-03-04 16:23:49,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-03-04 16:23:49,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-03-04 16:23:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 04:23:48" (1/2) ... [2019-03-04 16:23:49,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2795d5ab and model type codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:23:49, skipping insertion in model container [2019-03-04 16:23:49,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 04:23:49" (2/2) ... [2019-03-04 16:23:49,322 INFO L112 eAbstractionObserver]: Analyzing ICFG codeblockAssertOrder01.bpl [2019-03-04 16:23:49,332 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-03-04 16:23:49,342 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-03-04 16:23:49,360 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-03-04 16:23:49,392 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-03-04 16:23:49,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-03-04 16:23:49,393 INFO L383 AbstractCegarLoop]: Hoare is true [2019-03-04 16:23:49,394 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-03-04 16:23:49,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-03-04 16:23:49,394 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-03-04 16:23:49,394 INFO L387 AbstractCegarLoop]: Difference is false [2019-03-04 16:23:49,394 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-03-04 16:23:49,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-03-04 16:23:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-03-04 16:23:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-03-04 16:23:49,415 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:23:49,416 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-03-04 16:23:49,419 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:23:49,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:23:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-03-04 16:23:49,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:23:49,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:23:49,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:49,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:49,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:49,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-03-04 16:23:49,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-03-04 16:23:49,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-03-04 16:23:49,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-03-04 16:23:49,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-03-04 16:23:49,590 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-03-04 16:23:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:23:49,615 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-03-04 16:23:49,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-03-04 16:23:49,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-03-04 16:23:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:23:49,629 INFO L225 Difference]: With dead ends: 11 [2019-03-04 16:23:49,629 INFO L226 Difference]: Without dead ends: 5 [2019-03-04 16:23:49,633 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 [2019-03-04 16:23:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-03-04 16:23:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-03-04 16:23:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-03-04 16:23:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-03-04 16:23:49,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-03-04 16:23:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:23:49,672 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-03-04 16:23:49,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-03-04 16:23:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-03-04 16:23:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-03-04 16:23:49,673 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:23:49,674 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-03-04 16:23:49,674 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:23:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:23:49,675 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-03-04 16:23:49,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:23:49,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:23:49,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:49,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:49,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:49,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:23:49,820 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:23:49,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:49,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-03-04 16:23:49,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:23:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:49,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-03-04 16:23:49,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-03-04 16:23:49,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-03-04 16:23:49,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-03-04 16:23:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-03-04 16:23:49,996 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-03-04 16:23:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:23:50,082 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-03-04 16:23:50,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-03-04 16:23:50,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-03-04 16:23:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:23:50,084 INFO L225 Difference]: With dead ends: 8 [2019-03-04 16:23:50,084 INFO L226 Difference]: Without dead ends: 6 [2019-03-04 16:23:50,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-03-04 16:23:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-03-04 16:23:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-03-04 16:23:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-03-04 16:23:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-03-04 16:23:50,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-03-04 16:23:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:23:50,088 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-03-04 16:23:50,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-03-04 16:23:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-03-04 16:23:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-03-04 16:23:50,089 INFO L394 BasicCegarLoop]: Found error trace [2019-03-04 16:23:50,089 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-03-04 16:23:50,089 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-03-04 16:23:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-03-04 16:23:50,090 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2019-03-04 16:23:50,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-03-04 16:23:50,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-03-04 16:23:50,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:50,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-03-04 16:23:50,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-03-04 16:23:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-03-04 16:23:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-03-04 16:23:50,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-03-04 16:23:50,172 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-03-04 16:23:50,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-03-04 16:23:50,194 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-03-04 16:23:50,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-03-04 16:23:50,196 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-03-04 16:23:50,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-03-04 16:23:50,244 INFO L453 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-03-04 16:23:50,245 INFO L309 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-03-04 16:23:50,286 INFO L309 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-03-04 16:23:50,287 INFO L209 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:18 [2019-03-04 16:23:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-03-04 16:23:50,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-03-04 16:23:50,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2019-03-04 16:23:50,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-03-04 16:23:50,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-03-04 16:23:50,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:23:50,366 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2019-03-04 16:23:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-03-04 16:23:50,426 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-03-04 16:23:50,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-03-04 16:23:50,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-03-04 16:23:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-03-04 16:23:50,428 INFO L225 Difference]: With dead ends: 8 [2019-03-04 16:23:50,428 INFO L226 Difference]: Without dead ends: 0 [2019-03-04 16:23:50,429 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-03-04 16:23:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-03-04 16:23:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-03-04 16:23:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-03-04 16:23:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-03-04 16:23:50,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-03-04 16:23:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-03-04 16:23:50,430 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-03-04 16:23:50,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-03-04 16:23:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-03-04 16:23:50,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-03-04 16:23:50,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-03-04 16:23:50,457 INFO L451 ceAbstractionStarter]: At program point L15-1(lines 15 17) the Hoare annotation is: true [2019-03-04 16:23:50,457 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 10 22) no Hoare annotation was computed. [2019-03-04 16:23:50,457 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2019-03-04 16:23:50,457 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2019-03-04 16:23:50,457 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-03-04 16:23:50,457 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 21) no Hoare annotation was computed. [2019-03-04 16:23:50,466 INFO L202 PluginConnector]: Adding new model codeblockAssertOrder01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 04:23:50 BoogieIcfgContainer [2019-03-04 16:23:50,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-03-04 16:23:50,467 INFO L168 Benchmark]: Toolchain (without parser) took 1514.53 ms. Allocated memory was 132.6 MB in the beginning and 171.4 MB in the end (delta: 38.8 MB). Free memory was 107.8 MB in the beginning and 139.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2019-03-04 16:23:50,469 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.50 ms. Allocated memory is still 132.6 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:23:50,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 132.6 MB. Free memory was 107.8 MB in the beginning and 105.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-03-04 16:23:50,472 INFO L168 Benchmark]: Boogie Preprocessor took 28.55 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 104.9 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 7.1 GB. [2019-03-04 16:23:50,473 INFO L168 Benchmark]: RCFGBuilder took 295.68 ms. Allocated memory is still 132.6 MB. Free memory was 104.9 MB in the beginning and 96.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2019-03-04 16:23:50,474 INFO L168 Benchmark]: TraceAbstraction took 1151.39 ms. Allocated memory was 132.6 MB in the beginning and 171.4 MB in the end (delta: 38.8 MB). Free memory was 96.0 MB in the beginning and 139.4 MB in the end (delta: -43.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-03-04 16:23:50,481 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 0.50 ms. Allocated memory is still 132.6 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 132.6 MB. Free memory was 107.8 MB in the beginning and 105.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.55 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 104.9 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 295.68 ms. Allocated memory is still 132.6 MB. Free memory was 104.9 MB in the beginning and 96.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1151.39 ms. Allocated memory was 132.6 MB in the beginning and 171.4 MB in the end (delta: 38.8 MB). Free memory was 96.0 MB in the beginning and 139.4 MB in the end (delta: -43.4 MB). There was no memory consumed. 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: true - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s 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, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 16 ConstructedInterpolants, 1 QuantifiedInterpolants, 182 SizeOfPredicates, 2 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...