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/non_con/loop-literal-widening.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:13:52,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:13:52,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:13:52,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:13:52,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:13:52,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:13:52,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:13:52,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:13:52,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:13:52,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:13:52,271 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:13:52,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:13:52,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:13:52,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:13:52,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:13:52,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:13:52,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:13:52,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:13:52,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:13:52,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:13:52,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:13:52,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:13:52,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:13:52,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:13:52,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:13:52,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:13:52,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:13:52,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:13:52,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:13:52,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:13:52,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:13:52,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:13:52,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:13:52,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:13:52,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:13:52,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:13:52,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:13:52,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:13:52,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:13:52,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:13:52,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:13:52,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:13:52,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:13:52,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:13:52,346 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:13:52,347 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:13:52,348 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/loop-literal-widening.bpl [2019-08-05 11:13:52,348 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/loop-literal-widening.bpl' [2019-08-05 11:13:52,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:13:52,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:13:52,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:52,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:13:52,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:13:52,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:52,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:13:52,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:13:52,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:13:52,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/1) ... [2019-08-05 11:13:52,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:13:52,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:13:52,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:13:52,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:13:52,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (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 11:13:52,524 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:13:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:13:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:13:52,766 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:13:52,766 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:13:52,768 INFO L202 PluginConnector]: Adding new model loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:52 BoogieIcfgContainer [2019-08-05 11:13:52,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:13:52,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:13:52,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:13:52,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:13:52,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:52" (1/2) ... [2019-08-05 11:13:52,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ab9349 and model type loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:13:52, skipping insertion in model container [2019-08-05 11:13:52,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:52" (2/2) ... [2019-08-05 11:13:52,776 INFO L109 eAbstractionObserver]: Analyzing ICFG loop-literal-widening.bpl [2019-08-05 11:13:52,786 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:13:52,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:13:52,810 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:13:52,834 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:13:52,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:13:52,835 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:13:52,835 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:13:52,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:13:52,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:13:52,836 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:13:52,836 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:13:52,836 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:13:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 11:13:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:13:52,859 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:52,860 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:13:52,862 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:52,868 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-08-05 11:13:52,914 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:52,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:13:52,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:52,984 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 11:13:52,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:52,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:52,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:13:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:13:53,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:13:53,007 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 11:13:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:53,059 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 11:13:53,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:13:53,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:13:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:53,071 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:13:53,072 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:13:53,074 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 11:13:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:13:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:13:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:13:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:13:53,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:13:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:53,102 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:13:53,102 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:13:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:13:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:13:53,103 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:53,103 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:13:53,103 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-08-05 11:13:53,105 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:53,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:13:53,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:13:53,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:13:53,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:13:53,261 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:13:53,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:13:53,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:13:53,263 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 11:13:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:53,316 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 11:13:53,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:13:53,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 11:13:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:53,317 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:13:53,317 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:13:53,319 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 11:13:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:13:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:13:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:13:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 11:13:53,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 11:13:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:53,322 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 11:13:53,322 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:13:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 11:13:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:13:53,323 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:53,323 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 11:13:53,323 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:53,324 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2019-08-05 11:13:53,325 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:53,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:13:53,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 11:13:53,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:53,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:53,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:13:53,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:13:53,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:13:53,362 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2019-08-05 11:13:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:53,403 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 11:13:53,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:13:53,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-08-05 11:13:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:53,404 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:13:53,404 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:13:53,405 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:13:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:13:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:13:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:13:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:13:53,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-08-05 11:13:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:53,407 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:13:53,407 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:13:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:13:53,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:13:53,413 INFO L202 PluginConnector]: Adding new model loop-literal-widening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:13:53 BoogieIcfgContainer [2019-08-05 11:13:53,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:13:53,419 INFO L168 Benchmark]: Toolchain (without parser) took 1035.35 ms. Allocated memory is still 133.2 MB. Free memory was 110.9 MB in the beginning and 71.6 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,423 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 133.2 MB. Free memory was 111.9 MB in the beginning and 111.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.05 ms. Allocated memory is still 133.2 MB. Free memory was 110.7 MB in the beginning and 108.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,425 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 133.2 MB. Free memory was 108.9 MB in the beginning and 107.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,426 INFO L168 Benchmark]: RCFGBuilder took 321.82 ms. Allocated memory is still 133.2 MB. Free memory was 107.9 MB in the beginning and 99.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,428 INFO L168 Benchmark]: TraceAbstraction took 644.24 ms. Allocated memory is still 133.2 MB. Free memory was 98.6 MB in the beginning and 71.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:53,432 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 133.2 MB. Free memory was 111.9 MB in the beginning and 111.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.05 ms. Allocated memory is still 133.2 MB. Free memory was 110.7 MB in the beginning and 108.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 133.2 MB. Free memory was 108.9 MB in the beginning and 107.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.82 ms. Allocated memory is still 133.2 MB. Free memory was 107.9 MB in the beginning and 99.0 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 644.24 ms. Allocated memory is still 133.2 MB. Free memory was 98.6 MB in the beginning and 71.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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, 5 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=2, 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, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 2 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...