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/programs/abstractInterpretation/regression/oct/stmt-assign-relational-twoVar.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:09:23,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:09:23,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:09:23,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:09:23,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:09:23,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:09:23,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:09:23,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:09:23,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:09:23,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:09:23,600 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:09:23,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:09:23,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:09:23,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:09:23,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:09:23,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:09:23,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:09:23,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:09:23,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:09:23,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:09:23,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:09:23,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:09:23,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:09:23,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:09:23,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:09:23,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:09:23,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:09:23,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:09:23,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:09:23,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:09:23,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:09:23,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:09:23,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:09:23,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:09:23,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:09:23,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:09:23,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:09:23,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:09:23,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:09:23,682 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:09:23,683 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:09:23,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/oct/stmt-assign-relational-twoVar.bpl [2019-08-05 11:09:23,685 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/oct/stmt-assign-relational-twoVar.bpl' [2019-08-05 11:09:23,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:09:23,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:09:23,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:23,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:09:23,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:09:23,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:09:23,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:09:23,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:09:23,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:09:23,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... [2019-08-05 11:09:23,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:09:23,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:09:23,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:09:23,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:09:23,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 11:09:23,841 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:09:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:09:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:09:24,101 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:09:24,102 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:09:24,103 INFO L202 PluginConnector]: Adding new model stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:24 BoogieIcfgContainer [2019-08-05 11:09:24,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:09:24,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:09:24,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:09:24,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:09:24,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:09:23" (1/2) ... [2019-08-05 11:09:24,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c03cc1 and model type stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:09:24, skipping insertion in model container [2019-08-05 11:09:24,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:09:24" (2/2) ... [2019-08-05 11:09:24,112 INFO L109 eAbstractionObserver]: Analyzing ICFG stmt-assign-relational-twoVar.bpl [2019-08-05 11:09:24,122 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:09:24,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 11:09:24,146 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 11:09:24,173 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:09:24,174 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:09:24,174 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:09:24,174 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:09:24,175 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:09:24,175 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:09:24,175 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:09:24,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:09:24,175 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:09:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-08-05 11:09:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:09:24,199 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:24,200 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:09:24,202 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:09:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 11:09:24,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:24,306 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:09:24,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:24,383 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 11:09:24,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:24,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:09:24,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:24,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,407 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-08-05 11:09:24,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:24,522 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-08-05 11:09:24,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:24,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:09:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:24,545 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:09:24,545 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:09:24,552 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:09:24,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:09:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:09:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-08-05 11:09:24,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 2 [2019-08-05 11:09:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:24,580 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-08-05 11:09:24,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-08-05 11:09:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:09:24,581 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:24,581 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:09:24,582 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:09:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2019-08-05 11:09:24,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:24,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:09:24,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:24,636 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 11:09:24,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:24,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:09:24,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:24,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:24,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,640 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 3 states. [2019-08-05 11:09:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:24,672 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-08-05 11:09:24,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:24,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:09:24,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:24,674 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:09:24,674 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:09:24,675 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:09:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:09:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:09:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2019-08-05 11:09:24,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2019-08-05 11:09:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:24,677 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2019-08-05 11:09:24,677 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2019-08-05 11:09:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:09:24,678 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:09:24,678 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:09:24,679 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:09:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:09:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2019-08-05 11:09:24,680 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:09:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:09:24,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:09:24,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:09:24,740 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 11:09:24,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:09:24,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:09:24,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:09:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:09:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,743 INFO L87 Difference]: Start difference. First operand 5 states and 4 transitions. Second operand 3 states. [2019-08-05 11:09:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:09:24,769 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 11:09:24,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:09:24,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 11:09:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:09:24,770 INFO L225 Difference]: With dead ends: 4 [2019-08-05 11:09:24,771 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:09:24,771 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:09:24,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:09:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:09:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:09:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:09:24,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-08-05 11:09:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:09:24,773 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:09:24,773 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:09:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:09:24,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:09:24,779 INFO L202 PluginConnector]: Adding new model stmt-assign-relational-twoVar.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:09:24 BoogieIcfgContainer [2019-08-05 11:09:24,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:09:24,783 INFO L168 Benchmark]: Toolchain (without parser) took 1058.78 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 69.9 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:24,784 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:09:24,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.80 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:24,786 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 107.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:24,787 INFO L168 Benchmark]: RCFGBuilder took 327.09 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 97.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:24,788 INFO L168 Benchmark]: TraceAbstraction took 675.05 ms. Allocated memory is still 140.5 MB. Free memory was 97.4 MB in the beginning and 69.9 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2019-08-05 11:09:24,793 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 0.29 ms. Allocated memory is still 140.5 MB. Free memory is still 110.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 31.80 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 107.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.09 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 97.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 675.05 ms. Allocated memory is still 140.5 MB. Free memory was 97.4 MB in the beginning and 69.9 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 8]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 13]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 3 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, 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, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 6 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...