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/n.c11.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 09:21:57,392 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 09:21:57,394 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 09:21:57,412 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 09:21:57,412 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 09:21:57,414 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 09:21:57,417 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 09:21:57,420 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 09:21:57,423 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 09:21:57,425 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 09:21:57,426 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 09:21:57,426 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 09:21:57,433 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 09:21:57,434 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 09:21:57,435 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 09:21:57,438 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 09:21:57,439 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 09:21:57,445 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 09:21:57,448 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 09:21:57,451 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 09:21:57,454 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 09:21:57,456 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 09:21:57,459 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 09:21:57,461 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 09:21:57,461 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 09:21:57,462 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 09:21:57,463 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 09:21:57,464 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 09:21:57,466 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 09:21:57,467 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 09:21:57,469 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 09:21:57,470 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 09:21:57,471 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 09:21:57,472 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 09:21:57,473 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 09:21:57,473 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 09:21:57,474 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 09:21:57,474 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 09:21:57,476 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 09:21:57,534 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 09:21:57,548 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 09:21:57,553 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 09:21:57,555 INFO L146 ILogger]: Initializing Boogie PL CUP Parser... [2019-05-23 09:21:57,556 INFO L146 ILogger]: Boogie PL CUP Parser initialized [2019-05-23 09:21:57,556 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/n.c11.i_3.bpl [2019-05-23 09:21:57,557 INFO L146 ILogger]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/n.c11.i_3.bpl' [2019-05-23 09:21:57,598 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 09:21:57,600 INFO L146 ILogger]: Walking toolchain with 4 elements. [2019-05-23 09:21:57,601 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,601 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 09:21:57,601 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 09:21:57,617 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,627 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,634 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 09:21:57,635 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,635 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 09:21:57,636 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 09:21:57,647 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,647 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,648 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,648 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,651 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,653 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,654 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/1) ... [2019-05-23 09:21:57,655 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 09:21:57,656 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 09:21:57,656 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 09:21:57,657 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 09:21:57,657 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "n.c11.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 09:21:57,723 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 09:21:57,723 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 09:21:58,092 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 09:21:58,092 INFO L146 ILogger]: Removed 1 assume(true) statements. [2019-05-23 09:21:58,094 INFO L146 ILogger]: Adding new model n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:58 BoogieIcfgContainer [2019-05-23 09:21:58,094 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 09:21:58,096 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 09:21:58,096 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 09:21:58,099 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 09:21:58,099 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.05 09:21:57" (1/2) ... [2019-05-23 09:21:58,101 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34896350 and model type n.c11.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 09:21:58,101 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 09:21:58" (2/2) ... [2019-05-23 09:21:58,103 INFO L146 ILogger]: Analyzing ICFG n.c11.i_3.bpl [2019-05-23 09:21:58,114 INFO L146 ILogger]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-05-23 09:21:58,132 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 09:21:58,183 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 09:21:58,217 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 09:21:58,218 INFO L146 ILogger]: Interprodecural is true [2019-05-23 09:21:58,218 INFO L146 ILogger]: Hoare is false [2019-05-23 09:21:58,218 INFO L146 ILogger]: Compute interpolants for ForwardPredicates [2019-05-23 09:21:58,219 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 09:21:58,219 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 09:21:58,219 INFO L146 ILogger]: Difference is false [2019-05-23 09:21:58,219 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 09:21:58,219 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 09:21:58,236 INFO L146 ILogger]: Start isEmpty. Operand 22 states. [2019-05-23 09:21:58,248 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 14 [2019-05-23 09:21:58,248 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,253 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:58,263 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,272 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,272 INFO L146 ILogger]: Analyzing trace with hash 212095086, now seen corresponding path program 1 times [2019-05-23 09:21:58,329 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,371 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,374 INFO L146 ILogger]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,379 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:58,473 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 09:21:58,476 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 09:21:58,477 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 09:21:58,481 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 09:21:58,495 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 09:21:58,496 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 09:21:58,498 INFO L146 ILogger]: Start difference. First operand 22 states. Second operand 5 states. [2019-05-23 09:21:58,692 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:58,693 INFO L146 ILogger]: Finished difference Result 31 states and 31 transitions. [2019-05-23 09:21:58,693 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 09:21:58,695 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 13 [2019-05-23 09:21:58,695 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:58,711 INFO L146 ILogger]: With dead ends: 31 [2019-05-23 09:21:58,712 INFO L146 ILogger]: Without dead ends: 26 [2019-05-23 09:21:58,714 INFO L146 ILogger]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 09:21:58,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 26 states. [2019-05-23 09:21:58,748 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-05-23 09:21:58,751 INFO L146 ILogger]: Start removeUnreachable. Operand 21 states. [2019-05-23 09:21:58,752 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-05-23 09:21:58,757 INFO L146 ILogger]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 13 [2019-05-23 09:21:58,758 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:58,759 INFO L146 ILogger]: Abstraction has 21 states and 21 transitions. [2019-05-23 09:21:58,759 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 09:21:58,759 INFO L146 ILogger]: Start isEmpty. Operand 21 states and 21 transitions. [2019-05-23 09:21:58,760 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 09:21:58,760 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:58,761 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] [2019-05-23 09:21:58,761 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:58,761 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:58,764 INFO L146 ILogger]: Analyzing trace with hash 1426495392, now seen corresponding path program 1 times [2019-05-23 09:21:58,765 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:58,805 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:58,808 INFO L146 ILogger]: Trace formula consists of 29 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 09:21:58,810 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:58,911 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 09:21:58,912 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:21:58,912 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 09:21:58,914 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 09:21:58,914 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 09:21:58,915 INFO L146 ILogger]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-05-23 09:21:58,915 INFO L146 ILogger]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2019-05-23 09:21:59,372 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:21:59,372 INFO L146 ILogger]: Finished difference Result 38 states and 38 transitions. [2019-05-23 09:21:59,374 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 09:21:59,374 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 20 [2019-05-23 09:21:59,375 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:21:59,376 INFO L146 ILogger]: With dead ends: 38 [2019-05-23 09:21:59,376 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 09:21:59,378 INFO L146 ILogger]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-05-23 09:21:59,379 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 09:21:59,383 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-05-23 09:21:59,383 INFO L146 ILogger]: Start removeUnreachable. Operand 28 states. [2019-05-23 09:21:59,384 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-05-23 09:21:59,385 INFO L146 ILogger]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 20 [2019-05-23 09:21:59,385 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:21:59,385 INFO L146 ILogger]: Abstraction has 28 states and 28 transitions. [2019-05-23 09:21:59,385 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 09:21:59,385 INFO L146 ILogger]: Start isEmpty. Operand 28 states and 28 transitions. [2019-05-23 09:21:59,387 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 09:21:59,387 INFO L146 ILogger]: Found error trace [2019-05-23 09:21:59,387 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:21:59,388 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:21:59,388 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:21:59,388 INFO L146 ILogger]: Analyzing trace with hash -137284562, now seen corresponding path program 2 times [2019-05-23 09:21:59,389 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:21:59,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:21:59,411 INFO L146 ILogger]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 09:21:59,413 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:21:59,633 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:21:59,634 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:21:59,634 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 09:21:59,634 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 09:21:59,635 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 09:21:59,635 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-05-23 09:21:59,635 INFO L146 ILogger]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2019-05-23 09:22:00,152 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:22:00,152 INFO L146 ILogger]: Finished difference Result 45 states and 45 transitions. [2019-05-23 09:22:00,153 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 09:22:00,154 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 27 [2019-05-23 09:22:00,154 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:22:00,155 INFO L146 ILogger]: With dead ends: 45 [2019-05-23 09:22:00,156 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 09:22:00,157 INFO L146 ILogger]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-05-23 09:22:00,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 09:22:00,160 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 35. [2019-05-23 09:22:00,161 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 09:22:00,161 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-05-23 09:22:00,162 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 27 [2019-05-23 09:22:00,162 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:22:00,162 INFO L146 ILogger]: Abstraction has 35 states and 35 transitions. [2019-05-23 09:22:00,162 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 09:22:00,163 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 35 transitions. [2019-05-23 09:22:00,163 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 09:22:00,164 INFO L146 ILogger]: Found error trace [2019-05-23 09:22:00,164 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:22:00,164 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:22:00,164 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:22:00,165 INFO L146 ILogger]: Analyzing trace with hash 1409678304, now seen corresponding path program 3 times [2019-05-23 09:22:00,166 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:22:00,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:22:00,191 INFO L146 ILogger]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 09:22:00,193 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:22:00,386 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:22:00,386 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:22:00,387 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 09:22:00,387 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 09:22:00,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 09:22:00,388 INFO L146 ILogger]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-05-23 09:22:00,388 INFO L146 ILogger]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2019-05-23 09:22:00,868 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:22:00,868 INFO L146 ILogger]: Finished difference Result 52 states and 52 transitions. [2019-05-23 09:22:00,868 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 09:22:00,869 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 34 [2019-05-23 09:22:00,870 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:22:00,871 INFO L146 ILogger]: With dead ends: 52 [2019-05-23 09:22:00,872 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 09:22:00,873 INFO L146 ILogger]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-05-23 09:22:00,873 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 09:22:00,878 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-05-23 09:22:00,878 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 09:22:00,879 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-05-23 09:22:00,879 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 34 [2019-05-23 09:22:00,880 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:22:00,880 INFO L146 ILogger]: Abstraction has 42 states and 42 transitions. [2019-05-23 09:22:00,880 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 09:22:00,880 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 42 transitions. [2019-05-23 09:22:00,881 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 09:22:00,882 INFO L146 ILogger]: Found error trace [2019-05-23 09:22:00,882 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 09:22:00,882 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-05-23 09:22:00,882 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 09:22:00,883 INFO L146 ILogger]: Analyzing trace with hash -641431570, now seen corresponding path program 4 times [2019-05-23 09:22:00,884 INFO L146 ILogger]: Using refinement strategy FixedRefinementStrategy [2019-05-23 09:22:00,910 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 09:22:00,913 INFO L146 ILogger]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 09:22:00,916 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 09:22:01,181 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 09:22:01,181 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 09:22:01,182 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 09:22:01,182 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 09:22:01,182 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 09:22:01,183 INFO L146 ILogger]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-05-23 09:22:01,183 INFO L146 ILogger]: Start difference. First operand 42 states and 42 transitions. Second operand 13 states. [2019-05-23 09:22:01,550 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 09:22:01,551 INFO L146 ILogger]: Finished difference Result 41 states and 40 transitions. [2019-05-23 09:22:01,551 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 09:22:01,551 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 41 [2019-05-23 09:22:01,552 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 09:22:01,553 INFO L146 ILogger]: With dead ends: 41 [2019-05-23 09:22:01,553 INFO L146 ILogger]: Without dead ends: 0 [2019-05-23 09:22:01,554 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2019-05-23 09:22:01,554 INFO L146 ILogger]: Start minimizeSevpa. Operand 0 states. [2019-05-23 09:22:01,554 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-05-23 09:22:01,554 INFO L146 ILogger]: Start removeUnreachable. Operand 0 states. [2019-05-23 09:22:01,555 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-05-23 09:22:01,555 INFO L146 ILogger]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-05-23 09:22:01,555 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 09:22:01,555 INFO L146 ILogger]: Abstraction has 0 states and 0 transitions. [2019-05-23 09:22:01,555 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 09:22:01,556 INFO L146 ILogger]: Start isEmpty. Operand 0 states and 0 transitions. [2019-05-23 09:22:01,556 INFO L146 ILogger]: Finished isEmpty. No accepting run. [2019-05-23 09:22:01,560 INFO L146 ILogger]: Adding new model n.c11.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 09:22:01 BoogieIcfgContainer [2019-05-23 09:22:01,561 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 09:22:01,563 INFO L146 ILogger]: Toolchain (without parser) took 3962.38 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 111.2 MB in the beginning and 136.3 MB in the end (delta: -25.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,565 INFO L146 ILogger]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,566 INFO L146 ILogger]: Boogie Procedure Inliner took 34.31 ms. Allocated memory is still 133.7 MB. Free memory was 111.0 MB in the beginning and 109.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,567 INFO L146 ILogger]: Boogie Preprocessor took 20.46 ms. Allocated memory is still 133.7 MB. Free memory was 109.4 MB in the beginning and 108.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,568 INFO L146 ILogger]: RCFGBuilder took 438.05 ms. Allocated memory is still 133.7 MB. Free memory was 108.3 MB in the beginning and 98.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,569 INFO L146 ILogger]: TraceAbstraction took 3465.25 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 98.1 MB in the beginning and 136.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-05-23 09:22:01,573 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 0.20 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.31 ms. Allocated memory is still 133.7 MB. Free memory was 111.0 MB in the beginning and 109.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.46 ms. Allocated memory is still 133.7 MB. Free memory was 109.4 MB in the beginning and 108.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.05 ms. Allocated memory is still 133.7 MB. Free memory was 108.3 MB in the beginning and 98.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3465.25 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 98.1 MB in the beginning and 136.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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, 22 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 52 SDslu, 582 SDs, 0 SdLazy, 576 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, 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, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 10310 SizeOfPredicates, 35 NumberOfNonLiveVariables, 190 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...