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/insertion_sort.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 09:21:57,236 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 09:21:57,238 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 09:21:57,251 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 09:21:57,251 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 09:21:57,253 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 09:21:57,255 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 09:21:57,257 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 09:21:57,258 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 09:21:57,259 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 09:21:57,260 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 09:21:57,261 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 09:21:57,262 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 09:21:57,263 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 09:21:57,264 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 09:21:57,265 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 09:21:57,266 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 09:21:57,268 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 09:21:57,270 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 09:21:57,274 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 09:21:57,275 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 09:21:57,277 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 09:21:57,283 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 09:21:57,283 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 09:21:57,283 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 09:21:57,284 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 09:21:57,285 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 09:21:57,286 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 09:21:57,288 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 09:21:57,289 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 09:21:57,291 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 09:21:57,292 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 09:21:57,294 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 09:21:57,294 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 09:21:57,295 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 09:21:57,295 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 09:21:57,295 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 09:21:57,296 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 09:21:57,300 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 09:21:57,354 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 09:21:57,370 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 09:21:57,374 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 09:21:57,375 INFO L146 ILogger]: Initializing Boogie PL CUP Parser... [2019-05-23 09:21:57,375 INFO L146 ILogger]: Boogie PL CUP Parser initialized [2019-05-23 09:21:57,376 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl [2019-05-23 09:21:57,377 INFO L146 ILogger]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/insertion_sort.i_3.bpl' [2019-05-23 09:21:57,414 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 09:21:57,416 INFO L146 ILogger]: Walking toolchain with 4 elements. [2019-05-23 09:21:57,417 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,417 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 09:21:57,417 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 09:21:57,434 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,446 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,453 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,454 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,454 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 09:21:57,455 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 09:21:57,466 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,466 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,467 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,467 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,471 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,473 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,474 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,475 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,476 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 09:21:57,476 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 09:21:57,476 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 09:21:57,477 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "insertion_sort.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 09:21:57,538 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 09:21:57,538 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 09:21:57,928 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 09:21:57,928 INFO L146 ILogger]: Removed 3 assume(true) statements. [2019-05-23 09:21:57,930 INFO L146 ILogger]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:57 BoogieIcfgContainer [2019-05-23 09:21:57,930 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 09:21:57,932 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 09:21:57,932 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 09:21:57,935 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 09:21:57,936 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/2) ... [2019-05-23 09:21:57,937 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c19c3eb and model type insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 09:21:57, skipping insertion in model container [2019-05-23 09:21:57,937 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:57" (2/2) ... [2019-05-23 09:21:57,939 INFO L146 ILogger]: Analyzing ICFG insertion_sort.i_3.bpl [2019-05-23 09:21:57,949 INFO L146 ILogger]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-05-23 09:21:57,965 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 09:21:57,995 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 09:21:58,044 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 09:21:58,046 INFO L146 ILogger]: Interprodecural is true [2019-05-23 09:21:58,046 INFO L146 ILogger]: Hoare is false [2019-05-23 09:21:58,046 INFO L146 ILogger]: Compute interpolants for ForwardPredicates [2019-05-23 09:21:58,046 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 09:21:58,047 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 09:21:58,047 INFO L146 ILogger]: Difference is false [2019-05-23 09:21:58,047 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 09:21:58,047 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 09:21:58,074 INFO L146 ILogger]: Start isEmpty. Operand 29 states. [2019-05-23 09:21:58,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 09:21:58,089 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,090 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:58,093 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,112 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,112 INFO L146 ILogger]: Analyzing trace with hash 1812219286, now seen corresponding path program 1 times [2019-05-23 09:21:58,168 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,229 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,232 INFO L146 ILogger]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,238 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:58,363 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 09:21:58,365 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 09:21:58,366 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 09:21:58,370 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 09:21:58,382 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 09:21:58,384 INFO L146 ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-05-23 09:21:58,386 INFO L146 ILogger]: Start difference. First operand 29 states. Second operand 5 states. [2019-05-23 09:21:58,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:58,520 INFO L146 ILogger]: Finished difference Result 36 states and 36 transitions. [2019-05-23 09:21:58,520 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 09:21:58,522 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 19 [2019-05-23 09:21:58,523 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:58,535 INFO L146 ILogger]: With dead ends: 36 [2019-05-23 09:21:58,535 INFO L146 ILogger]: Without dead ends: 34 [2019-05-23 09:21:58,537 INFO L146 ILogger]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-05-23 09:21:58,552 INFO L146 ILogger]: Start minimizeSevpa. Operand 34 states. [2019-05-23 09:21:58,568 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-05-23 09:21:58,569 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 09:21:58,570 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-05-23 09:21:58,571 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2019-05-23 09:21:58,572 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:58,572 INFO L146 ILogger]: Abstraction has 28 states and 28 transitions. [2019-05-23 09:21:58,572 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 09:21:58,573 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 28 transitions. [2019-05-23 09:21:58,574 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 09:21:58,574 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,574 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 09:21:58,574 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,575 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,575 INFO L146 ILogger]: Analyzing trace with hash -403927918, now seen corresponding path program 1 times [2019-05-23 09:21:58,576 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,622 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,629 INFO L146 ILogger]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,632 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:59,023 WARN L146 ILogger]: Spent 113.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2019-05-23 09:21:59,125 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2019-05-23 09:21:59,126 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:21:59,152 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:21:59,153 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:21:59,153 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2019-05-23 09:21:59,335 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 09:21:59,335 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:21:59,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-05-23 09:21:59,339 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 09:21:59,340 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 09:21:59,340 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-05-23 09:21:59,341 INFO L146 ILogger]: Start difference. First operand 28 states and 28 transitions. Second operand 10 states. [2019-05-23 09:21:59,513 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2019-05-23 09:21:59,880 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2019-05-23 09:21:59,969 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:59,969 INFO L146 ILogger]: Finished difference Result 46 states and 46 transitions. [2019-05-23 09:21:59,970 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 09:21:59,970 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 27 [2019-05-23 09:21:59,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:59,971 INFO L146 ILogger]: With dead ends: 46 [2019-05-23 09:21:59,972 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 09:21:59,973 INFO L146 ILogger]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-05-23 09:21:59,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 09:21:59,977 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-05-23 09:21:59,978 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 09:21:59,983 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-05-23 09:21:59,983 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 27 [2019-05-23 09:21:59,983 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:59,984 INFO L146 ILogger]: Abstraction has 36 states and 36 transitions. [2019-05-23 09:21:59,984 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 09:21:59,984 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 36 transitions. [2019-05-23 09:21:59,985 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 09:21:59,985 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:59,985 INFO L146 ILogger]: trace histogram [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, 1] [2019-05-23 09:21:59,986 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:59,986 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:59,986 INFO L146 ILogger]: Analyzing trace with hash -1517545586, now seen corresponding path program 2 times [2019-05-23 09:21:59,987 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:22:00,120 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:22:00,123 INFO L146 ILogger]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 09:22:00,126 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:22:00,489 INFO L146 ILogger]: detected not equals via solver [2019-05-23 09:22:00,491 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2019-05-23 09:22:00,491 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:22:00,517 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:22:00,518 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:22:00,518 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:13 [2019-05-23 09:22:00,731 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2019-05-23 09:22:00,732 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:22:00,734 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:22:00,735 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:22:00,735 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2019-05-23 09:22:00,877 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:22:00,878 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:22:00,878 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-05-23 09:22:00,878 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 09:22:00,879 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 09:22:00,879 INFO L146 ILogger]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-05-23 09:22:00,880 INFO L146 ILogger]: Start difference. First operand 36 states and 36 transitions. Second operand 15 states. [2019-05-23 09:22:01,363 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:22:01,363 INFO L146 ILogger]: Finished difference Result 54 states and 54 transitions. [2019-05-23 09:22:01,364 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 09:22:01,364 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 35 [2019-05-23 09:22:01,365 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:22:01,366 INFO L146 ILogger]: With dead ends: 54 [2019-05-23 09:22:01,366 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 09:22:01,367 INFO L146 ILogger]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-05-23 09:22:01,368 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 09:22:01,372 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 44. [2019-05-23 09:22:01,372 INFO L146 ILogger]: Start removeUnreachable. Operand 44 states. [2019-05-23 09:22:01,373 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2019-05-23 09:22:01,374 INFO L146 ILogger]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 35 [2019-05-23 09:22:01,374 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:22:01,374 INFO L146 ILogger]: Abstraction has 44 states and 44 transitions. [2019-05-23 09:22:01,374 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 09:22:01,375 INFO L146 ILogger]: Start isEmpty. Operand 44 states and 44 transitions. [2019-05-23 09:22:01,376 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 09:22:01,376 INFO L146 ILogger]: Found error trace [2019-05-23 09:22:01,376 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:22:01,376 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:22:01,377 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:22:01,377 INFO L146 ILogger]: Analyzing trace with hash 727639690, now seen corresponding path program 3 times [2019-05-23 09:22:01,378 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:22:01,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:22:01,453 INFO L146 ILogger]: Trace formula consists of 63 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 09:22:01,456 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:22:01,670 INFO L146 ILogger]: detected not equals via solver [2019-05-23 09:22:01,673 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2019-05-23 09:22:01,674 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:22:01,683 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:22:01,683 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:22:01,684 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:13 [2019-05-23 09:22:01,780 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2019-05-23 09:22:01,781 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:22:01,790 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:22:01,791 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 09:22:01,791 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2019-05-23 09:22:01,889 INFO L146 ILogger]: detected not equals via solver [2019-05-23 09:22:01,892 INFO L146 ILogger]: detected not equals via solver [2019-05-23 09:22:01,895 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2019-05-23 09:22:01,896 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 09:22:01,907 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 09:22:01,907 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 09:22:01,908 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2019-05-23 09:22:01,982 INFO L146 ILogger]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:22:01,982 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:22:01,982 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 09:22:01,983 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 09:22:01,983 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 09:22:01,984 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-05-23 09:22:01,984 INFO L146 ILogger]: Start difference. First operand 44 states and 44 transitions. Second operand 17 states. [2019-05-23 09:22:02,656 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:22:02,656 INFO L146 ILogger]: Finished difference Result 43 states and 43 transitions. [2019-05-23 09:22:02,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 09:22:02,657 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 43 [2019-05-23 09:22:02,658 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:22:02,658 INFO L146 ILogger]: With dead ends: 43 [2019-05-23 09:22:02,658 INFO L146 ILogger]: Without dead ends: 0 [2019-05-23 09:22:02,659 INFO L146 ILogger]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2019-05-23 09:22:02,660 INFO L146 ILogger]: Start minimizeSevpa. Operand 0 states. [2019-05-23 09:22:02,660 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-05-23 09:22:02,660 INFO L146 ILogger]: Start removeUnreachable. Operand 0 states. [2019-05-23 09:22:02,660 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-05-23 09:22:02,660 INFO L146 ILogger]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-05-23 09:22:02,661 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:22:02,661 INFO L146 ILogger]: Abstraction has 0 states and 0 transitions. [2019-05-23 09:22:02,661 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 09:22:02,661 INFO L146 ILogger]: Start isEmpty. Operand 0 states and 0 transitions. [2019-05-23 09:22:02,661 INFO L146 ILogger]: Finished isEmpty. No accepting run. [2019-05-23 09:22:02,665 INFO L146 ILogger]: Adding new model insertion_sort.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:22:02 BoogieIcfgContainer [2019-05-23 09:22:02,666 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 09:22:02,667 INFO L146 ILogger]: Toolchain (without parser) took 5251.35 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 111.1 MB in the beginning and 72.7 MB in the end (delta: 38.4 MB). Peak memory consumption was 101.4 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:02,668 INFO L146 ILogger]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-05-23 09:22:02,669 INFO L146 ILogger]: Boogie Procedure Inliner took 37.04 ms. Allocated memory is still 133.7 MB. Free memory was 110.7 MB in the beginning and 109.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:02,670 INFO L146 ILogger]: Boogie Preprocessor took 21.15 ms. Allocated memory is still 133.7 MB. Free memory was 109.0 MB in the beginning and 108.1 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 7.1 GB. [2019-05-23 09:22:02,670 INFO L146 ILogger]: RCFGBuilder took 454.35 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 96.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:02,671 INFO L146 ILogger]: TraceAbstraction took 4733.95 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 96.5 MB in the beginning and 72.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:02,675 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 0.23 ms. Allocated memory is still 133.7 MB. Free memory is still 112.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.04 ms. Allocated memory is still 133.7 MB. Free memory was 110.7 MB in the beginning and 109.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.15 ms. Allocated memory is still 133.7 MB. Free memory was 109.0 MB in the beginning and 108.1 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 454.35 ms. Allocated memory is still 133.7 MB. Free memory was 108.1 MB in the beginning and 96.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4733.95 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 96.5 MB in the beginning and 72.7 MB in the end (delta: 23.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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, 4.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 SDtfs, 131 SDslu, 317 SDs, 0 SdLazy, 558 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, 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, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 24532 SizeOfPredicates, 36 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/38 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...