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/scalable/INC_likeFlaggedButNoFlag4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:53:07,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:53:07,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:53:07,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:53:07,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:53:07,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:53:07,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:53:07,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:53:07,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:53:07,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:53:07,753 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:53:07,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:53:07,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:53:07,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:53:07,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:53:07,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:53:07,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:53:07,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:53:07,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:53:07,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:53:07,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:53:07,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:53:07,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:53:07,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:53:07,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:53:07,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:53:07,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:53:07,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:53:07,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:53:07,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:53:07,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:53:07,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:53:07,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:53:07,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:53:07,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:53:07,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:53:07,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:53:07,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:53:07,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:53:07,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:53:07,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:53:07,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:53:07,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:53:07,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:53:07,845 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:53:07,845 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:53:07,846 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/scalable/INC_likeFlaggedButNoFlag4.bpl [2019-08-05 10:53:07,846 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/scalable/INC_likeFlaggedButNoFlag4.bpl' [2019-08-05 10:53:07,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:53:07,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:53:07,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:53:07,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:53:07,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:53:07,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,928 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:53:07,928 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:53:07,929 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:53:07,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:53:07,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:53:07,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:53:07,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:53:07,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/1) ... [2019-08-05 10:53:07,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:53:07,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:53:07,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:53:07,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:53:07,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (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 10:53:08,028 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2019-08-05 10:53:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-08-05 10:53:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-08-05 10:53:08,269 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:53:08,270 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-08-05 10:53:08,271 INFO L202 PluginConnector]: Adding new model INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:53:08 BoogieIcfgContainer [2019-08-05 10:53:08,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:53:08,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:53:08,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:53:08,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:53:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:53:07" (1/2) ... [2019-08-05 10:53:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28eac001 and model type INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:53:08, skipping insertion in model container [2019-08-05 10:53:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:53:08" (2/2) ... [2019-08-05 10:53:08,279 INFO L109 eAbstractionObserver]: Analyzing ICFG INC_likeFlaggedButNoFlag4.bpl [2019-08-05 10:53:08,288 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:53:08,298 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:53:08,315 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:53:08,340 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:53:08,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:53:08,341 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:53:08,342 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:53:08,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:53:08,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:53:08,342 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:53:08,343 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:53:08,343 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:53:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-08-05 10:53:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:53:08,365 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:53:08,366 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:53:08,368 INFO L418 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:53:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:53:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 939636, now seen corresponding path program 1 times [2019-08-05 10:53:08,420 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:53:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:53:08,454 WARN L254 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:53:08,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:53:08,564 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 10:53:08,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:53:08,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:53:08,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:53:08,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:53:08,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:53:08,616 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-08-05 10:53:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:53:08,734 INFO L93 Difference]: Finished difference Result 14 states and 22 transitions. [2019-08-05 10:53:08,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:53:08,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 10:53:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:53:08,747 INFO L225 Difference]: With dead ends: 14 [2019-08-05 10:53:08,747 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:53:08,749 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 10:53:08,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:53:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-08-05 10:53:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-08-05 10:53:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-08-05 10:53:08,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 4 [2019-08-05 10:53:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:53:08,781 INFO L475 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-08-05 10:53:08,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:53:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-08-05 10:53:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:53:08,782 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:53:08,783 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 10:53:08,783 INFO L418 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:53:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:53:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash 29129610, now seen corresponding path program 1 times [2019-08-05 10:53:08,785 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:53:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:53:08,798 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:53:08,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:53:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:53:08,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:53:08,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:53:08,973 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:53:08,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:53:08,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:08,974 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-08-05 10:53:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:53:09,040 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2019-08-05 10:53:09,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:53:09,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:53:09,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:53:09,041 INFO L225 Difference]: With dead ends: 11 [2019-08-05 10:53:09,041 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:53:09,042 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:53:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 10:53:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 10:53:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2019-08-05 10:53:09,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2019-08-05 10:53:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:53:09,045 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-08-05 10:53:09,045 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:53:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2019-08-05 10:53:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:53:09,045 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:53:09,046 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 10:53:09,046 INFO L418 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:53:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:53:09,047 INFO L82 PathProgramCache]: Analyzing trace with hash 28760214, now seen corresponding path program 1 times [2019-08-05 10:53:09,048 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:53:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:53:09,056 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:53:09,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:53:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:53:09,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:53:09,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:53:09,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:53:09,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:53:09,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:09,145 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2019-08-05 10:53:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:53:09,206 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-08-05 10:53:09,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:53:09,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:53:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:53:09,207 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:53:09,207 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 10:53:09,208 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 10:53:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 10:53:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 10:53:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 10:53:09,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 5 [2019-08-05 10:53:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:53:09,210 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 10:53:09,211 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:53:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 10:53:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:53:09,222 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:53:09,223 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 10:53:09,223 INFO L418 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:53:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:53:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 29094952, now seen corresponding path program 1 times [2019-08-05 10:53:09,224 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:53:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:53:09,237 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:53:09,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:53:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:53:09,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:53:09,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:53:09,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:53:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:53:09,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:09,457 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2019-08-05 10:53:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:53:09,479 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 10:53:09,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:53:09,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:53:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:53:09,480 INFO L225 Difference]: With dead ends: 5 [2019-08-05 10:53:09,480 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:53:09,480 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:53:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:53:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:53:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:53:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:53:09,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-08-05 10:53:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:53:09,481 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:53:09,482 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:53:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:53:09,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:53:09,487 INFO L202 PluginConnector]: Adding new model INC_likeFlaggedButNoFlag4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:53:09 BoogieIcfgContainer [2019-08-05 10:53:09,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:53:09,489 INFO L168 Benchmark]: Toolchain (without parser) took 1601.13 ms. Allocated memory was 142.6 MB in the beginning and 175.1 MB in the end (delta: 32.5 MB). Free memory was 112.1 MB in the beginning and 139.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:53:09,490 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory is still 113.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:53:09,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.32 ms. Allocated memory is still 142.6 MB. Free memory was 112.1 MB in the beginning and 110.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:53:09,492 INFO L168 Benchmark]: Boogie Preprocessor took 27.89 ms. Allocated memory is still 142.6 MB. Free memory was 110.0 MB in the beginning and 109.1 MB in the end (delta: 910.0 kB). Peak memory consumption was 910.0 kB. Max. memory is 7.1 GB. [2019-08-05 10:53:09,493 INFO L168 Benchmark]: RCFGBuilder took 311.26 ms. Allocated memory is still 142.6 MB. Free memory was 108.7 MB in the beginning and 98.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:53:09,494 INFO L168 Benchmark]: TraceAbstraction took 1214.75 ms. Allocated memory was 142.6 MB in the beginning and 175.1 MB in the end (delta: 32.5 MB). Free memory was 97.9 MB in the beginning and 139.4 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:53:09,498 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 0.21 ms. Allocated memory is still 142.6 MB. Free memory is still 113.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.32 ms. Allocated memory is still 142.6 MB. Free memory was 112.1 MB in the beginning and 110.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.89 ms. Allocated memory is still 142.6 MB. Free memory was 110.0 MB in the beginning and 109.1 MB in the end (delta: 910.0 kB). Peak memory consumption was 910.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 311.26 ms. Allocated memory is still 142.6 MB. Free memory was 108.7 MB in the beginning and 98.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1214.75 ms. Allocated memory was 142.6 MB in the beginning and 175.1 MB in the end (delta: 32.5 MB). Free memory was 97.9 MB in the beginning and 139.4 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: 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, 9 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 13 SDslu, 12 SDs, 0 SdLazy, 27 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 741 SizeOfPredicates, 0 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...