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/lassos/arrays/BugMapElimination01-Aleppo-A.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:44,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:44,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:44,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:44,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:44,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:44,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:44,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:44,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:44,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:44,257 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:44,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:44,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:44,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:44,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:44,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:44,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:44,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:44,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:44,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:44,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:44,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:44,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:44,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:44,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 09:52:44,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:44,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:44,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:44,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:44,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:44,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:44,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:44,348 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:44,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/lassos/arrays/BugMapElimination01-Aleppo-A.bpl [2019-08-05 09:52:44,349 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/lassos/arrays/BugMapElimination01-Aleppo-A.bpl' [2019-08-05 09:52:44,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:44,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:44,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:44,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:44,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:44,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:44,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:44,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:44,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:44,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... [2019-08-05 09:52:44,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:44,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:44,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:44,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:44,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 09:52:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 09:52:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 09:52:45,080 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 09:52:45,081 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 09:52:45,082 INFO L202 PluginConnector]: Adding new model BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:45 BoogieIcfgContainer [2019-08-05 09:52:45,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:45,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:45,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:45,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:45,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:44" (1/2) ... [2019-08-05 09:52:45,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52122667 and model type BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:45, skipping insertion in model container [2019-08-05 09:52:45,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:45" (2/2) ... [2019-08-05 09:52:45,090 INFO L109 eAbstractionObserver]: Analyzing ICFG BugMapElimination01-Aleppo-A.bpl [2019-08-05 09:52:45,100 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:45,107 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-08-05 09:52:45,124 INFO L252 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-08-05 09:52:45,147 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:45,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:45,148 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:45,148 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:45,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:45,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:45,149 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:45,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:45,150 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-08-05 09:52:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 09:52:45,173 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:45,174 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 09:52:45,176 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash 64740, now seen corresponding path program 1 times [2019-08-05 09:52:45,226 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:45,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 09:52:45,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:45,535 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2019-08-05 09:52:45,536 INFO L341 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-08-05 09:52:45,537 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-08-05 09:52:45,538 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 09:52:45,608 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-08-05 09:52:45,610 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:45,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-08-05 09:52:45,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-08-05 09:52:45,615 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:45,713 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:45,973 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2019-08-05 09:52:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:45,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:45,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 09:52:45,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 09:52:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 09:52:46,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:46,011 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-08-05 09:52:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:46,211 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-08-05 09:52:46,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 09:52:46,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-08-05 09:52:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:46,224 INFO L225 Difference]: With dead ends: 16 [2019-08-05 09:52:46,225 INFO L226 Difference]: Without dead ends: 14 [2019-08-05 09:52:46,227 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 09:52:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-08-05 09:52:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-08-05 09:52:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-08-05 09:52:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-08-05 09:52:46,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2019-08-05 09:52:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:46,265 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-08-05 09:52:46,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 09:52:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-08-05 09:52:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 09:52:46,266 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:46,266 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 09:52:46,266 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2006985, now seen corresponding path program 1 times [2019-08-05 09:52:46,268 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:46,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-05 09:52:46,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:46,322 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_14|], 2=[|v_#valid_22|]} [2019-08-05 09:52:46,374 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 09:52:46,376 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-08-05 09:52:46,376 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 09:52:46,417 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 09:52:46,432 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2019-08-05 09:52:46,433 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-08-05 09:52:46,504 INFO L567 ElimStorePlain]: treesize reduction 14, result has 56.3 percent of original size [2019-08-05 09:52:46,505 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 09:52:46,506 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:9 [2019-08-05 09:52:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:46,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:46,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 09:52:46,657 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 09:52:46,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 09:52:46,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:46,659 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-08-05 09:52:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:46,799 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-08-05 09:52:46,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 09:52:46,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 09:52:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:46,800 INFO L225 Difference]: With dead ends: 12 [2019-08-05 09:52:46,801 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 09:52:46,802 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 09:52:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 09:52:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-05 09:52:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 09:52:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 09:52:46,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-08-05 09:52:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:46,805 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 09:52:46,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 09:52:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 09:52:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 09:52:46,806 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:46,806 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:46,807 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:46,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1931536435, now seen corresponding path program 1 times [2019-08-05 09:52:46,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:46,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 09:52:46,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:47,010 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2019-08-05 09:52:47,011 INFO L341 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-08-05 09:52:47,011 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-08-05 09:52:47,012 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 09:52:47,277 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2019-08-05 09:52:47,277 INFO L567 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-08-05 09:52:47,278 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,280 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-08-05 09:52:47,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-08-05 09:52:47,280 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,293 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,302 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,316 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,327 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,337 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,370 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-08-05 09:52:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:47,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:47,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 09:52:47,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 09:52:47,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 09:52:47,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:47,472 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-05 09:52:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:47,587 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-08-05 09:52:47,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 09:52:47,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-08-05 09:52:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:47,588 INFO L225 Difference]: With dead ends: 16 [2019-08-05 09:52:47,588 INFO L226 Difference]: Without dead ends: 16 [2019-08-05 09:52:47,589 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 09:52:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-08-05 09:52:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 10. [2019-08-05 09:52:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-08-05 09:52:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-08-05 09:52:47,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-08-05 09:52:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:47,593 INFO L475 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-08-05 09:52:47,593 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 09:52:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-08-05 09:52:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-08-05 09:52:47,594 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:47,594 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:47,594 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr5ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:47,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:47,595 INFO L82 PathProgramCache]: Analyzing trace with hash 251912717, now seen corresponding path program 1 times [2019-08-05 09:52:47,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:47,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-05 09:52:47,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 09:52:47,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:47,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-08-05 09:52:47,714 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 09:52:47,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 09:52:47,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 09:52:47,715 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2019-08-05 09:52:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:47,831 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-08-05 09:52:47,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 09:52:47,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-08-05 09:52:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:47,834 INFO L225 Difference]: With dead ends: 15 [2019-08-05 09:52:47,834 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 09:52:47,835 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-08-05 09:52:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 09:52:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 09:52:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 09:52:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 09:52:47,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-08-05 09:52:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:47,836 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 09:52:47,836 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 09:52:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 09:52:47,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 09:52:47,841 INFO L202 PluginConnector]: Adding new model BugMapElimination01-Aleppo-A.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:47 BoogieIcfgContainer [2019-08-05 09:52:47,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:47,844 INFO L168 Benchmark]: Toolchain (without parser) took 3442.52 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 110.7 MB in the beginning and 68.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:47,844 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 133.7 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:47,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 133.7 MB. Free memory was 110.7 MB in the beginning and 109.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:47,846 INFO L168 Benchmark]: Boogie Preprocessor took 45.05 ms. Allocated memory is still 133.7 MB. Free memory was 109.0 MB in the beginning and 107.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:47,848 INFO L168 Benchmark]: RCFGBuilder took 591.43 ms. Allocated memory is still 133.7 MB. Free memory was 107.3 MB in the beginning and 91.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:47,849 INFO L168 Benchmark]: TraceAbstraction took 2758.02 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 91.6 MB in the beginning and 68.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:47,853 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 0.20 ms. Allocated memory is still 133.7 MB. Free memory is still 111.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 133.7 MB. Free memory was 110.7 MB in the beginning and 109.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.05 ms. Allocated memory is still 133.7 MB. Free memory was 109.0 MB in the beginning and 107.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 591.43 ms. Allocated memory is still 133.7 MB. Free memory was 107.3 MB in the beginning and 91.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2758.02 ms. Allocated memory was 133.7 MB in the beginning and 170.4 MB in the end (delta: 36.7 MB). Free memory was 91.6 MB in the beginning and 68.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 72]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 96]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 85]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 86]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 6 error locations. SAFE Result, 2.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 67 SDslu, 0 SDs, 0 SdLazy, 65 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 7 QuantifiedInterpolants, 1918 SizeOfPredicates, 23 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...