java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:36:23,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:36:23,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:36:23,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-30 10:36:23,737 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 10:36:23,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:36:23,753 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:36:23,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:36:23,754 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:36:23,755 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:36:23,755 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:36:23,755 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:36:23,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:36:23,756 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:36:23,756 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:36:23,756 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:36:23,756 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:36:23,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:36:23,757 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:36:23,757 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:36:23,757 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:36:23,757 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:36:23,757 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:36:23,758 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:36:23,758 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:36:23,758 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:36:23,758 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:36:23,758 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:36:23,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:36:23,759 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:36:23,759 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:36:23,759 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:36:23,759 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:36:23,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:36:23,761 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:36:23,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:36:23,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:36:23,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:36:23,842 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:36:23,843 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:36:23,844 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl [2018-09-30 10:36:23,844 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl' [2018-09-30 10:36:23,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:36:23,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:36:23,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:36:23,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:36:23,901 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:36:23,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,941 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:36:23,941 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:36:23,941 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:36:23,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:36:23,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:36:23,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:36:23,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:36:23,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/1) ... [2018-09-30 10:36:23,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:36:23,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:36:23,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:36:23,969 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:36:23,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (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 [2018-09-30 10:36:24,042 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 10:36:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 10:36:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 10:36:24,267 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:36:24,268 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:36:24 BoogieIcfgContainer [2018-09-30 10:36:24,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:36:24,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:36:24,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:36:24,272 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:36:24,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:36:23" (1/2) ... [2018-09-30 10:36:24,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f59a152 and model type ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:36:24, skipping insertion in model container [2018-09-30 10:36:24,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:36:24" (2/2) ... [2018-09-30 10:36:24,276 INFO L112 eAbstractionObserver]: Analyzing ICFG ValueTerminatedArrayIteration01.bpl [2018-09-30 10:36:24,286 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:36:24,294 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:36:24,348 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:36:24,349 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:36:24,349 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:36:24,349 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:36:24,350 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:36:24,350 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:36:24,350 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:36:24,351 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:36:24,351 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:36:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-30 10:36:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:36:24,382 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:24,384 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:36:24,386 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:24,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:24,394 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-09-30 10:36:24,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:24,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:24,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:24,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:24,553 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:36:24,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-30 10:36:24,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:36:24,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:36:24,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:36:24,577 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-30 10:36:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:24,682 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-30 10:36:24,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:36:24,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:36:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:24,698 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:36:24,698 INFO L226 Difference]: Without dead ends: 5 [2018-09-30 10:36:24,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:36:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-30 10:36:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-30 10:36:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-30 10:36:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-30 10:36:24,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-30 10:36:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:24,759 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-30 10:36:24,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:36:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-30 10:36:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 10:36:24,759 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:24,759 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 10:36:24,760 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:24,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:24,760 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-09-30 10:36:24,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:24,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:24,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:24,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:25,049 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-09-30 10:36:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:25,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:25,076 INFO L227 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 [2018-09-30 10:36:25,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:25,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:25,182 INFO L477 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 [2018-09-30 10:36:25,185 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-30 10:36:25,291 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-30 10:36:25,292 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-30 10:36:25,465 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-09-30 10:36:25,466 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-30 10:36:25,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-30 10:36:25,500 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:21 [2018-09-30 10:36:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:25,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:25,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-09-30 10:36:25,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:36:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:36:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-30 10:36:25,664 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2018-09-30 10:36:25,833 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-09-30 10:36:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:25,900 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-30 10:36:25,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:36:25,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2018-09-30 10:36:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:25,901 INFO L225 Difference]: With dead ends: 10 [2018-09-30 10:36:25,902 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 10:36:25,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-09-30 10:36:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 10:36:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 10:36:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 10:36:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 10:36:25,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-30 10:36:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:25,907 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 10:36:25,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:36:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 10:36:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:36:25,908 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:25,910 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-30 10:36:25,910 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:25,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 2 times [2018-09-30 10:36:25,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:25,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:25,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:25,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:25,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:26,175 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 10 [2018-09-30 10:36:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:36:26,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:26,301 INFO L227 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 [2018-09-30 10:36:26,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:36:26,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:36:26,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:26,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:26,333 INFO L477 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 [2018-09-30 10:36:26,334 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-30 10:36:26,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-30 10:36:26,428 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-30 10:36:26,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 49 [2018-09-30 10:36:26,625 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 8 xjuncts. [2018-09-30 10:36:26,751 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-30 10:36:26,752 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:69 [2018-09-30 10:36:27,029 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 9 [2018-09-30 10:36:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:27,067 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:27,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2018-09-30 10:36:27,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:36:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:36:27,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-09-30 10:36:27,070 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2018-09-30 10:36:27,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:27,246 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-30 10:36:27,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:36:27,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2018-09-30 10:36:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:27,247 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:36:27,247 INFO L226 Difference]: Without dead ends: 0 [2018-09-30 10:36:27,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2018-09-30 10:36:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-30 10:36:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-30 10:36:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-30 10:36:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-30 10:36:27,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-09-30 10:36:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:27,250 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-30 10:36:27,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:36:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-30 10:36:27,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-30 10:36:27,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-30 10:36:27,312 INFO L422 ceAbstractionStarter]: At program point L17-1(lines 17 19) the Hoare annotation is: (and (< i (+ end 1)) (= 42 (select a end))) [2018-09-30 10:36:27,312 INFO L426 ceAbstractionStarter]: For program point mainENTRY(lines 11 21) no Hoare annotation was computed. [2018-09-30 10:36:27,313 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-09-30 10:36:27,313 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-09-30 10:36:27,313 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 20) no Hoare annotation was computed. [2018-09-30 10:36:27,313 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-30 10:36:27,323 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:36:27 BoogieIcfgContainer [2018-09-30 10:36:27,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:36:27,324 INFO L168 Benchmark]: Toolchain (without parser) took 3427.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:27,325 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:27,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:27,327 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:27,327 INFO L168 Benchmark]: RCFGBuilder took 299.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:27,328 INFO L168 Benchmark]: TraceAbstraction took 3054.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:27,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.34 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.27 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 299.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3054.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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: 17]: Loop Invariant Derived loop invariant: i < end + 1 && 42 == a[end] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 32 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, 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, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 1 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 18 ConstructedInterpolants, 2 QuantifiedInterpolants, 859 SizeOfPredicates, 2 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ValueTerminatedArrayIteration01.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-36-27-345.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ValueTerminatedArrayIteration01.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-36-27-345.csv Received shutdown request...