java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/Backtranslation/regression/bpl/CallReturn.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:15,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:15,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:15,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:15,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:15,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:15,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:15,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:15,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:15,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:15,460 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:15,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:15,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:15,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:15,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:15,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:15,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:15,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:15,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:15,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:15,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:15,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:15,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:15,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:15,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 09:52:15,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:15,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:15,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:15,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:15,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:15,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:15,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:15,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:15,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:15,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:15,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:15,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:15,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:15,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:15,544 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:15,544 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:15,545 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Backtranslation/regression/bpl/CallReturn.bpl [2019-08-05 09:52:15,546 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/Backtranslation/regression/bpl/CallReturn.bpl' [2019-08-05 09:52:15,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:15,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:15,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:15,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:15,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:15,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,608 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 09:52:15,608 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 09:52:15,608 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 09:52:15,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:15,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:15,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:15,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:15,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/1) ... [2019-08-05 09:52:15,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:15,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:15,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:15,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:15,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (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:1024 -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:1024 -smt2 -in -t:12000 [2019-08-05 09:52:15,707 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Main given in one single declaration [2019-08-05 09:52:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2019-08-05 09:52:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2019-08-05 09:52:15,708 INFO L124 BoogieDeclarations]: Specification and implementation of procedure inc given in one single declaration [2019-08-05 09:52:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2019-08-05 09:52:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2019-08-05 09:52:16,024 INFO L275 CfgBuilder]: Using library mode [2019-08-05 09:52:16,025 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 09:52:16,027 INFO L202 PluginConnector]: Adding new model CallReturn.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:16 BoogieIcfgContainer [2019-08-05 09:52:16,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:16,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:16,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:16,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:16,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:15" (1/2) ... [2019-08-05 09:52:16,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e30b94 and model type CallReturn.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:16, skipping insertion in model container [2019-08-05 09:52:16,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CallReturn.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:16" (2/2) ... [2019-08-05 09:52:16,038 INFO L109 eAbstractionObserver]: Analyzing ICFG CallReturn.bpl [2019-08-05 09:52:16,049 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:16,058 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 09:52:16,077 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 09:52:16,104 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:16,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:16,105 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:16,105 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:16,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:16,105 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:16,105 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:16,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:16,106 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-08-05 09:52:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 09:52:16,132 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:16,133 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 09:52:16,136 INFO L418 AbstractCegarLoop]: === Iteration 1 === [MainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash 899729959, now seen corresponding path program 1 times [2019-08-05 09:52:16,192 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:16,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 09:52:16,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:16,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:16,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-08-05 09:52:16,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 09:52:16,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 09:52:16,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:16,389 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-08-05 09:52:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:16,495 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-08-05 09:52:16,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 09:52:16,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-08-05 09:52:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:16,507 INFO L225 Difference]: With dead ends: 11 [2019-08-05 09:52:16,507 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 09:52:16,509 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 09:52:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-08-05 09:52:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-08-05 09:52:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-08-05 09:52:16,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-08-05 09:52:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:16,554 INFO L475 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-08-05 09:52:16,555 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 09:52:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-08-05 09:52:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 09:52:16,557 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:16,557 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:16,558 INFO L418 AbstractCegarLoop]: === Iteration 2 === [MainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash -379003511, now seen corresponding path program 1 times [2019-08-05 09:52:16,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:16,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 09:52:16,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 09:52:16,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 09:52:16,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 09:52:16,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 09:52:16,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 09:52:16,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-08-05 09:52:16,973 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2019-08-05 09:52:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:17,102 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-08-05 09:52:17,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 09:52:17,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-08-05 09:52:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:17,104 INFO L225 Difference]: With dead ends: 12 [2019-08-05 09:52:17,104 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 09:52:17,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-08-05 09:52:17,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 09:52:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-08-05 09:52:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-08-05 09:52:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-08-05 09:52:17,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-08-05 09:52:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:17,112 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-08-05 09:52:17,112 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 09:52:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-08-05 09:52:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-08-05 09:52:17,113 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:17,113 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2019-08-05 09:52:17,114 INFO L418 AbstractCegarLoop]: === Iteration 3 === [MainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:17,114 INFO L82 PathProgramCache]: Analyzing trace with hash 699440491, now seen corresponding path program 2 times [2019-08-05 09:52:17,115 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:17,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 09:52:17,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-05 09:52:17,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 09:52:17,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-08-05 09:52:17,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 09:52:17,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 09:52:17,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-08-05 09:52:17,363 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 7 states. [2019-08-05 09:52:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:17,592 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-08-05 09:52:17,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 09:52:17,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-08-05 09:52:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:17,595 INFO L225 Difference]: With dead ends: 14 [2019-08-05 09:52:17,595 INFO L226 Difference]: Without dead ends: 14 [2019-08-05 09:52:17,596 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-08-05 09:52:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-08-05 09:52:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-08-05 09:52:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-08-05 09:52:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-08-05 09:52:17,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 14 [2019-08-05 09:52:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:17,601 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-08-05 09:52:17,602 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 09:52:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-08-05 09:52:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-08-05 09:52:17,603 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:17,603 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2019-08-05 09:52:17,603 INFO L418 AbstractCegarLoop]: === Iteration 4 === [MainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1216845363, now seen corresponding path program 3 times [2019-08-05 09:52:17,605 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:17,670 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 09:52:17,695 INFO L202 PluginConnector]: Adding new model CallReturn.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:17 BoogieIcfgContainer [2019-08-05 09:52:17,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:17,701 INFO L168 Benchmark]: Toolchain (without parser) took 2123.42 ms. Allocated memory was 134.2 MB in the beginning and 169.3 MB in the end (delta: 35.1 MB). Free memory was 111.8 MB in the beginning and 135.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:17,703 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 112.8 MB in the beginning and 112.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:17,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.43 ms. Allocated memory is still 134.2 MB. Free memory was 111.6 MB in the beginning and 109.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:17,705 INFO L168 Benchmark]: Boogie Preprocessor took 19.86 ms. Allocated memory is still 134.2 MB. Free memory was 109.6 MB in the beginning and 108.7 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:17,707 INFO L168 Benchmark]: RCFGBuilder took 395.64 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 99.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:17,709 INFO L168 Benchmark]: TraceAbstraction took 1666.44 ms. Allocated memory was 134.2 MB in the beginning and 169.3 MB in the end (delta: 35.1 MB). Free memory was 98.8 MB in the beginning and 135.8 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:17,715 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 112.8 MB in the beginning and 112.6 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 36.43 ms. Allocated memory is still 134.2 MB. Free memory was 111.6 MB in the beginning and 109.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.86 ms. Allocated memory is still 134.2 MB. Free memory was 109.6 MB in the beginning and 108.7 MB in the end (delta: 900.2 kB). Peak memory consumption was 900.2 kB. Max. memory is 7.1 GB. * RCFGBuilder took 395.64 ms. Allocated memory is still 134.2 MB. Free memory was 108.5 MB in the beginning and 99.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1666.44 ms. Allocated memory was 134.2 MB in the beginning and 169.3 MB in the end (delta: 35.1 MB). Free memory was 98.8 MB in the beginning and 135.8 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L18] y := 0; VAL [y=0] [L19] CALL call z := inc(y); VAL [x=0] [L6] COND FALSE !(x > 10) [L9] y := x + 5; VAL [x=0, y=5] [L10] CALL call res := inc(y); VAL [x=5] [L6] COND FALSE !(x > 10) [L9] y := x + 5; VAL [x=5, y=10] [L10] CALL call res := inc(y); VAL [x=10] [L6] COND FALSE !(x > 10) [L9] y := x + 5; VAL [x=10, y=15] [L10] CALL call res := inc(y); VAL [x=15] [L6] COND TRUE x > 10 [L7] res := x + 1; VAL [res=16, x=15] [L10] RET call res := inc(y); VAL [res=16, x=10, y=15] [L10] RET call res := inc(y); VAL [res=16, x=5, y=10] [L10] RET call res := inc(y); VAL [res=16, x=0, y=5] [L19] RET call z := inc(y); VAL [y=0, z=16] [L20] assert z == 0; VAL [y=0, z=16] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 9 SDslu, 37 SDs, 0 SdLazy, 45 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 6 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...