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/20181010-MemSafetyPathprograms/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:00:39,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:00:39,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:00:39,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-08-05 11:00:39,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:00:39,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:00:39,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:00:39,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:00:39,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:00:39,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:00:39,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:00:39,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:00:39,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:00:39,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:00:39,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:00:39,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:00:39,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:00:39,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:00:39,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:00:39,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:00:39,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:00:39,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:00:39,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:00:39,847 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:00:39,847 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:00:39,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl [2019-08-05 11:00:39,850 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl' [2019-08-05 11:00:39,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:00:39,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:00:39,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:00:39,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:00:39,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:00:39,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:39,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:39,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:00:39,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:00:39,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:00:39,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:00:39,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:39,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/1) ... [2019-08-05 11:00:40,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:00:40,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:00:40,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:00:40,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:00:40,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (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 11:00:40,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:00:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:00:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:00:40,598 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:00:40,598 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:00:40,600 INFO L202 PluginConnector]: Adding new model sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:00:40 BoogieIcfgContainer [2019-08-05 11:00:40,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:00:40,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:00:40,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:00:40,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:00:40,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:00:39" (1/2) ... [2019-08-05 11:00:40,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e4fac2 and model type sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:00:40, skipping insertion in model container [2019-08-05 11:00:40,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:00:40" (2/2) ... [2019-08-05 11:00:40,609 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl [2019-08-05 11:00:40,620 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:00:40,627 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:00:40,642 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:00:40,664 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:00:40,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:00:40,665 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:00:40,665 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:00:40,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:00:40,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:00:40,666 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:00:40,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:00:40,666 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:00:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-08-05 11:00:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:00:40,688 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:00:40,689 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 11:00:40,691 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:00:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:00:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash 28787175, now seen corresponding path program 1 times [2019-08-05 11:00:40,744 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:00:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:00:40,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2019-08-05 11:00:40,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:00:41,103 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 11:00:41,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:00:41,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-08-05 11:00:41,109 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 11:00:41,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 11:00:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:00:41,122 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 5 states. [2019-08-05 11:00:41,305 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-08-05 11:00:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:00:41,563 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-08-05 11:00:41,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:00:41,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-08-05 11:00:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:00:41,579 INFO L225 Difference]: With dead ends: 10 [2019-08-05 11:00:41,579 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 11:00:41,584 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-08-05 11:00:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 11:00:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2019-08-05 11:00:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 11:00:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-08-05 11:00:41,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-08-05 11:00:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:00:41,623 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-08-05 11:00:41,623 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 11:00:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-08-05 11:00:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 11:00:41,624 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:00:41,624 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-08-05 11:00:41,625 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:00:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:00:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1894723713, now seen corresponding path program 1 times [2019-08-05 11:00:41,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:00:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:00:41,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 25 conjunts are in the unsatisfiable core [2019-08-05 11:00:41,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:00:41,881 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 10 treesize of output 8 [2019-08-05 11:00:41,892 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:41,905 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:41,906 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 11:00:41,933 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:41,933 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:00:41,994 INFO L567 ElimStorePlain]: treesize reduction 3, result has 85.0 percent of original size [2019-08-05 11:00:41,995 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:00:41,996 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:27, output treesize:4 [2019-08-05 11:00:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-08-05 11:00:42,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:00:42,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:00:42,024 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:00:42,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:00:42,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:00:42,025 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-08-05 11:00:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:00:42,045 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-08-05 11:00:42,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:00:42,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-08-05 11:00:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:00:42,046 INFO L225 Difference]: With dead ends: 9 [2019-08-05 11:00:42,046 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 11:00:42,047 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 11:00:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 11:00:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-05 11:00:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 11:00:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-08-05 11:00:42,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2019-08-05 11:00:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:00:42,050 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-08-05 11:00:42,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:00:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-08-05 11:00:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 11:00:42,051 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:00:42,051 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-08-05 11:00:42,052 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:00:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:00:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash 262017386, now seen corresponding path program 1 times [2019-08-05 11:00:42,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:00:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:00:42,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2019-08-05 11:00:42,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:00:42,444 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:42,446 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2019-08-05 11:00:42,446 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:00:42,562 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2019-08-05 11:00:42,563 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:42,591 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:42,593 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:42,594 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2019-08-05 11:00:42,595 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 11:00:42,619 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:42,621 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:00:42,621 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:49, output treesize:11 [2019-08-05 11:00:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:00:42,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:00:42,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-08-05 11:00:42,762 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-08-05 11:00:42,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-08-05 11:00:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=41, Unknown=2, NotChecked=0, Total=56 [2019-08-05 11:00:42,763 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 8 states. [2019-08-05 11:00:43,512 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-08-05 11:00:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:00:43,573 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-08-05 11:00:43,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-08-05 11:00:43,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2019-08-05 11:00:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:00:43,575 INFO L225 Difference]: With dead ends: 12 [2019-08-05 11:00:43,576 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 11:00:43,577 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=133, Unknown=2, NotChecked=0, Total=182 [2019-08-05 11:00:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 11:00:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-05 11:00:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 11:00:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-08-05 11:00:43,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-08-05 11:00:43,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:00:43,580 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-08-05 11:00:43,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-08-05 11:00:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-08-05 11:00:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 11:00:43,581 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:00:43,581 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2019-08-05 11:00:43,582 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:00:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:00:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1604310204, now seen corresponding path program 2 times [2019-08-05 11:00:43,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:00:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:00:43,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 78 conjunts are in the unsatisfiable core [2019-08-05 11:00:43,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:00:43,947 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-08-05 11:00:43,947 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 11:00:43,971 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:43,978 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-08-05 11:00:43,978 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 11:00:44,003 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:44,005 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-08-05 11:00:44,006 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:52, output treesize:38 [2019-08-05 11:00:44,258 INFO L392 ElimStorePlain]: Different costs {12=[|#memory_$Pointer$.base|], 20=[|#memory_$Pointer$.offset|]} [2019-08-05 11:00:44,298 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:44,312 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:44,321 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:44,368 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:44,369 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 55 [2019-08-05 11:00:44,371 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,372 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,375 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,376 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,378 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-08-05 11:00:44,472 INFO L567 ElimStorePlain]: treesize reduction 15, result has 81.3 percent of original size [2019-08-05 11:00:44,491 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:44,494 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 11:00:44,529 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 11:00:44,530 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 44 [2019-08-05 11:00:44,531 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,532 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,532 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,534 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,535 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,535 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,536 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,537 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:00:44,538 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-08-05 11:00:44,664 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2019-08-05 11:00:44,665 INFO L567 ElimStorePlain]: treesize reduction 25, result has 62.7 percent of original size [2019-08-05 11:00:44,666 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-08-05 11:00:44,667 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:95, output treesize:7 [2019-08-05 11:00:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:00:44,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:00:44,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-08-05 11:00:44,936 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-08-05 11:00:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-08-05 11:00:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=54, Unknown=3, NotChecked=0, Total=72 [2019-08-05 11:00:44,937 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 9 states. [2019-08-05 11:00:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:00:45,346 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-08-05 11:00:45,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-08-05 11:00:45,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-08-05 11:00:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:00:45,346 INFO L225 Difference]: With dead ends: 8 [2019-08-05 11:00:45,347 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:00:45,347 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=157, Unknown=12, NotChecked=0, Total=210 [2019-08-05 11:00:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:00:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:00:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:00:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:00:45,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-05 11:00:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:00:45,349 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:00:45,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-08-05 11:00:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:00:45,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:00:45,354 INFO L202 PluginConnector]: Adding new model sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_50.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:00:45 BoogieIcfgContainer [2019-08-05 11:00:45,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:00:45,356 INFO L168 Benchmark]: Toolchain (without parser) took 5433.29 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 108.3 MB in the beginning and 70.9 MB in the end (delta: 37.4 MB). Peak memory consumption was 100.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,357 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 110.4 MB in the beginning and 110.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.17 ms. Allocated memory is still 137.4 MB. Free memory was 108.1 MB in the beginning and 106.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,359 INFO L168 Benchmark]: Boogie Preprocessor took 55.97 ms. Allocated memory is still 137.4 MB. Free memory was 106.4 MB in the beginning and 104.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,360 INFO L168 Benchmark]: RCFGBuilder took 562.26 ms. Allocated memory is still 137.4 MB. Free memory was 104.8 MB in the beginning and 85.6 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,361 INFO L168 Benchmark]: TraceAbstraction took 4752.86 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 85.4 MB in the beginning and 70.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:00:45,365 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 110.4 MB in the beginning and 110.2 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 57.17 ms. Allocated memory is still 137.4 MB. Free memory was 108.1 MB in the beginning and 106.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.97 ms. Allocated memory is still 137.4 MB. Free memory was 106.4 MB in the beginning and 104.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 562.26 ms. Allocated memory is still 137.4 MB. Free memory was 104.8 MB in the beginning and 85.6 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4752.86 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 85.4 MB in the beginning and 70.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 237]: 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, 7 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13 SDtfs, 5 SDslu, 12 SDs, 0 SdLazy, 93 SolverSat, 32 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 10 QuantifiedInterpolants, 4535 SizeOfPredicates, 99 NumberOfNonLiveVariables, 732 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...