java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 09:21:57,368 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 09:21:57,371 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 09:21:57,383 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 09:21:57,384 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 09:21:57,385 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 09:21:57,386 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 09:21:57,388 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 09:21:57,390 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 09:21:57,391 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 09:21:57,392 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 09:21:57,392 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 09:21:57,393 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 09:21:57,394 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 09:21:57,396 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 09:21:57,396 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 09:21:57,397 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 09:21:57,399 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 09:21:57,402 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 09:21:57,403 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 09:21:57,404 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 09:21:57,406 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 09:21:57,408 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 09:21:57,409 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 09:21:57,409 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 09:21:57,410 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 09:21:57,410 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 09:21:57,412 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 09:21:57,412 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 09:21:57,413 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 09:21:57,413 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 09:21:57,414 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 09:21:57,415 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 09:21:57,416 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 09:21:57,417 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 09:21:57,417 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 09:21:57,417 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 09:21:57,418 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 09:21:57,419 INFO L146 ILogger]: Finished resetting all preferences to default values... Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 09:21:57,450 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 09:21:57,463 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 09:21:57,466 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 09:21:57,468 INFO L146 ILogger]: Initializing Boogie PL CUP Parser... [2019-05-23 09:21:57,469 INFO L146 ILogger]: Boogie PL CUP Parser initialized [2019-05-23 09:21:57,469 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl [2019-05-23 09:21:57,470 INFO L146 ILogger]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array.i_3.bpl' [2019-05-23 09:21:57,508 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 09:21:57,510 INFO L146 ILogger]: Walking toolchain with 4 elements. [2019-05-23 09:21:57,511 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,511 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 09:21:57,511 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 09:21:57,528 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,539 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,547 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,548 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,548 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 09:21:57,548 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 09:21:57,559 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,559 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,560 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,561 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,564 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,566 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,567 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,568 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,569 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 09:21:57,569 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 09:21:57,569 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 09:21:57,570 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (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:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 09:21:57,637 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 09:21:57,637 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 09:21:58,101 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 09:21:58,102 INFO L146 ILogger]: Removed 1 assume(true) statements. [2019-05-23 09:21:58,103 INFO L146 ILogger]: Adding new model array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:58 BoogieIcfgContainer [2019-05-23 09:21:58,103 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 09:21:58,105 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 09:21:58,105 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 09:21:58,108 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 09:21:58,109 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/2) ... [2019-05-23 09:21:58,110 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b993c10 and model type array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 09:21:58, skipping insertion in model container [2019-05-23 09:21:58,110 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:58" (2/2) ... [2019-05-23 09:21:58,112 INFO L146 ILogger]: Analyzing ICFG array.i_3.bpl [2019-05-23 09:21:58,122 INFO L146 ILogger]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-05-23 09:21:58,130 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 09:21:58,147 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 09:21:58,173 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 09:21:58,174 INFO L146 ILogger]: Interprodecural is true [2019-05-23 09:21:58,174 INFO L146 ILogger]: Hoare is false [2019-05-23 09:21:58,175 INFO L146 ILogger]: Compute interpolants for ForwardPredicates [2019-05-23 09:21:58,175 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 09:21:58,175 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 09:21:58,175 INFO L146 ILogger]: Difference is false [2019-05-23 09:21:58,175 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 09:21:58,175 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 09:21:58,191 INFO L146 ILogger]: Start isEmpty. Operand 29 states. [2019-05-23 09:21:58,200 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 19 [2019-05-23 09:21:58,200 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,201 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:58,204 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,210 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,210 INFO L146 ILogger]: Analyzing trace with hash 2092793945, now seen corresponding path program 1 times [2019-05-23 09:21:58,258 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,316 INFO L146 ILogger]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,322 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:58,493 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:21:58,496 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 09:21:58,497 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 09:21:58,502 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 09:21:58,513 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 09:21:58,514 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 09:21:58,516 INFO L146 ILogger]: Start difference. First operand 29 states. Second operand 4 states. [2019-05-23 09:21:58,624 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:58,625 INFO L146 ILogger]: Finished difference Result 35 states and 35 transitions. [2019-05-23 09:21:58,625 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 09:21:58,627 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 18 [2019-05-23 09:21:58,628 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:58,640 INFO L146 ILogger]: With dead ends: 35 [2019-05-23 09:21:58,640 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 09:21:58,642 INFO L146 ILogger]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 09:21:58,657 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 09:21:58,672 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 28. [2019-05-23 09:21:58,673 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 09:21:58,674 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-05-23 09:21:58,676 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2019-05-23 09:21:58,676 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:58,676 INFO L146 ILogger]: Abstraction has 28 states and 28 transitions. [2019-05-23 09:21:58,677 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 09:21:58,677 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 28 transitions. [2019-05-23 09:21:58,678 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 09:21:58,678 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,678 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:58,679 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,679 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,680 INFO L146 ILogger]: Analyzing trace with hash 628818439, now seen corresponding path program 1 times [2019-05-23 09:21:58,681 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,727 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,734 INFO L146 ILogger]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,737 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:58,811 INFO L146 ILogger]: 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 8 treesize of output 7 [2019-05-23 09:21:58,812 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:21:58,844 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:21:58,845 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:21:58,846 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:3 [2019-05-23 09:21:58,925 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:21:58,926 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:21:58,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 09:21:58,928 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 09:21:58,928 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 09:21:58,928 INFO L146 ILogger]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-05-23 09:21:58,929 INFO L146 ILogger]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-05-23 09:21:59,333 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:59,333 INFO L146 ILogger]: Finished difference Result 43 states and 43 transitions. [2019-05-23 09:21:59,334 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 09:21:59,334 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 27 [2019-05-23 09:21:59,335 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:59,336 INFO L146 ILogger]: With dead ends: 43 [2019-05-23 09:21:59,336 INFO L146 ILogger]: Without dead ends: 39 [2019-05-23 09:21:59,338 INFO L146 ILogger]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-05-23 09:21:59,338 INFO L146 ILogger]: Start minimizeSevpa. Operand 39 states. [2019-05-23 09:21:59,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-05-23 09:21:59,342 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 09:21:59,343 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-05-23 09:21:59,344 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 27 [2019-05-23 09:21:59,344 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:59,344 INFO L146 ILogger]: Abstraction has 37 states and 37 transitions. [2019-05-23 09:21:59,344 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 09:21:59,344 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 37 transitions. [2019-05-23 09:21:59,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 09:21:59,346 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:59,346 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:59,346 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:59,347 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:59,347 INFO L146 ILogger]: Analyzing trace with hash 222921753, now seen corresponding path program 2 times [2019-05-23 09:21:59,348 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:59,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:59,391 INFO L146 ILogger]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 09:21:59,394 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:59,523 INFO L146 ILogger]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:21:59,523 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:21:59,524 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 09:21:59,524 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 09:21:59,524 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 09:21:59,525 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 09:21:59,525 INFO L146 ILogger]: Start difference. First operand 37 states and 37 transitions. Second operand 6 states. [2019-05-23 09:21:59,689 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:59,689 INFO L146 ILogger]: Finished difference Result 21 states and 20 transitions. [2019-05-23 09:21:59,690 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 09:21:59,690 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 36 [2019-05-23 09:21:59,690 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:59,691 INFO L146 ILogger]: With dead ends: 21 [2019-05-23 09:21:59,691 INFO L146 ILogger]: Without dead ends: 0 [2019-05-23 09:21:59,692 INFO L146 ILogger]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-05-23 09:21:59,692 INFO L146 ILogger]: Start minimizeSevpa. Operand 0 states. [2019-05-23 09:21:59,693 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-05-23 09:21:59,693 INFO L146 ILogger]: Start removeUnreachable. Operand 0 states. [2019-05-23 09:21:59,693 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-05-23 09:21:59,693 INFO L146 ILogger]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-05-23 09:21:59,693 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:59,694 INFO L146 ILogger]: Abstraction has 0 states and 0 transitions. [2019-05-23 09:21:59,694 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 09:21:59,694 INFO L146 ILogger]: Start isEmpty. Operand 0 states and 0 transitions. [2019-05-23 09:21:59,694 INFO L146 ILogger]: Finished isEmpty. No accepting run. [2019-05-23 09:21:59,699 INFO L146 ILogger]: Adding new model array.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:21:59 BoogieIcfgContainer [2019-05-23 09:21:59,699 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 09:21:59,701 INFO L146 ILogger]: Toolchain (without parser) took 2190.64 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 110.8 MB in the beginning and 122.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,703 INFO L146 ILogger]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,704 INFO L146 ILogger]: Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 133.2 MB. Free memory was 110.5 MB in the beginning and 108.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,705 INFO L146 ILogger]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 133.2 MB. Free memory was 108.8 MB in the beginning and 107.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,706 INFO L146 ILogger]: RCFGBuilder took 534.37 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 96.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,707 INFO L146 ILogger]: TraceAbstraction took 1594.22 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 96.4 MB in the beginning and 122.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-05-23 09:21:59,712 INFO L146 ILogger]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.62 ms. Allocated memory is still 133.2 MB. Free memory was 110.5 MB in the beginning and 108.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 133.2 MB. Free memory was 108.8 MB in the beginning and 107.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 534.37 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 96.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1594.22 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 96.4 MB in the beginning and 122.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 42 SDslu, 120 SDs, 0 SdLazy, 90 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 6212 SizeOfPredicates, 13 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...