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-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:56:45,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:56:45,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:56:45,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:56:45,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:56:45,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:56:45,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:56:45,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:56:45,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:56:45,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:56:45,642 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:56:45,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:56:45,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:56:45,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:56:45,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:56:45,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:56:45,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:56:45,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:56:45,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:56:45,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:56:45,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:56:45,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:56:45,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:56:45,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:56:45,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:56:45,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:56:45,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:56:45,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:56:45,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:56:45,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:56:45,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:56:45,721 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:56:45,722 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:56:45,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl [2019-08-05 10:56:45,723 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl' [2019-08-05 10:56:45,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:56:45,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:56:45,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:56:45,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:56:45,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:56:45,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:56:45,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:56:45,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:56:45,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:56:45,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... [2019-08-05 10:56:45,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:56:45,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:56:45,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:56:45,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:56:45,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:56:45,964 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 10:56:45,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:56:45,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:56:46,497 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:56:46,498 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:56:46,499 INFO L202 PluginConnector]: Adding new model sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:56:46 BoogieIcfgContainer [2019-08-05 10:56:46,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:56:46,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:56:46,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:56:46,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:56:46,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:56:45" (1/2) ... [2019-08-05 10:56:46,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d43ea30 and model type sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:56:46, skipping insertion in model container [2019-08-05 10:56:46,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:56:46" (2/2) ... [2019-08-05 10:56:46,512 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets_true-unreach-call_true-valid-memsafety.i_45.bpl [2019-08-05 10:56:46,524 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:56:46,535 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:56:46,552 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:56:46,583 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:56:46,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:56:46,585 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:56:46,585 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:56:46,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:56:46,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:56:46,585 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:56:46,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:56:46,586 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:56:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:56:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:56:46,608 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:56:46,609 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:56:46,611 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:56:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:56:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2019-08-05 10:56:46,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:56:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:56:46,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:56:46,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:56:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:56:46,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:56:46,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:56:46,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:56:46,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:56:47,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:56:47,002 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:56:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:56:47,136 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:56:47,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:56:47,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:56:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:56:47,146 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:56:47,146 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:56:47,148 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:56:47,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:56:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:56:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:56:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:56:47,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:56:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:56:47,181 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:56:47,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:56:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:56:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:56:47,182 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:56:47,182 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:56:47,182 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:56:47,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:56:47,183 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2019-08-05 10:56:47,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:56:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:56:47,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 48 conjunts are in the unsatisfiable core [2019-08-05 10:56:47,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:56:47,924 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2019-08-05 10:56:47,925 INFO L341 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2019-08-05 10:56:47,926 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 42 [2019-08-05 10:56:47,927 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:47,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:56:48,186 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-08-05 10:56:48,187 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:48,244 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:48,247 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:48,250 INFO L172 IndexEqualityManager]: detected equality via solver [2019-08-05 10:56:48,280 INFO L341 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2019-08-05 10:56:48,281 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 49 [2019-08-05 10:56:48,282 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 10:56:48,475 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-08-05 10:56:48,476 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:48,479 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-08-05 10:56:48,479 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:152, output treesize:78 [2019-08-05 10:56:48,813 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-08-05 10:56:48,854 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2019-08-05 10:56:48,855 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:56:49,048 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-08-05 10:56:49,049 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:49,071 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2019-08-05 10:56:49,109 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:49,110 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:49,120 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_6, v_arrayElimCell_7], 3=[v_arrayElimCell_8]} [2019-08-05 10:56:49,129 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 7 treesize of output 3 [2019-08-05 10:56:49,129 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-08-05 10:56:49,174 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:49,180 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 7 treesize of output 3 [2019-08-05 10:56:49,181 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-08-05 10:56:49,193 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:49,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:49,206 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:56:49,239 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:49,240 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 31 [2019-08-05 10:56:49,241 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:49,241 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:49,243 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:49,245 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 3 xjuncts. [2019-08-05 10:56:49,301 INFO L567 ElimStorePlain]: treesize reduction 17, result has 56.4 percent of original size [2019-08-05 10:56:49,302 INFO L496 ElimStorePlain]: Start of recursive call 3: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-08-05 10:56:49,366 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:56:49,368 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:49,372 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2019-08-05 10:56:49,372 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 11 variables, input treesize:104, output treesize:47 [2019-08-05 10:56:49,671 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2019-08-05 10:56:49,673 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:56:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:56:49,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:56:49,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:56:49,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:56:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:56:49,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:56:49,696 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-08-05 10:56:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:56:49,859 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-05 10:56:49,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:56:49,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:56:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:56:49,860 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:56:49,861 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 10:56:49,862 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:56:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 10:56:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-05 10:56:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:56:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:56:49,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:56:49,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:56:49,864 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:56:49,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:56:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:56:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:56:49,865 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:56:49,865 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:56:49,865 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:56:49,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:56:49,866 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2019-08-05 10:56:49,866 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:56:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:56:50,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 79 conjunts are in the unsatisfiable core [2019-08-05 10:56:50,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:56:54,555 WARN L193 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) stderr output: (error "out of memory") [2019-08-05 10:56:54,557 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:207) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:224) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:159) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplifyWithStatistics(SmtUtils.java:207) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfTir.constructConjunction(XnfTir.java:303) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateConjuncts(XnfTir.java:227) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateSingleDisjuct(XnfTir.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.pqe.XnfTir.tryToEliminate(XnfTir.java:106) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.linearterms.QuantifierPusher.applyEliminationTechniques(QuantifierPusher.java:363) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:235) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPush(QuantifierPusher.java:154) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:119) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:130) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:126) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:78) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:252) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:204) ... 60 more [2019-08-05 10:56:54,562 INFO L168 Benchmark]: Toolchain (without parser) took 8773.35 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 108.9 MB in the beginning and 99.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,563 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 111.4 MB in the beginning and 111.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.07 ms. Allocated memory is still 133.7 MB. Free memory was 108.9 MB in the beginning and 107.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,565 INFO L168 Benchmark]: Boogie Preprocessor took 42.00 ms. Allocated memory is still 133.7 MB. Free memory was 107.0 MB in the beginning and 105.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,566 INFO L168 Benchmark]: RCFGBuilder took 609.38 ms. Allocated memory is still 133.7 MB. Free memory was 105.1 MB in the beginning and 80.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,570 INFO L168 Benchmark]: TraceAbstraction took 8058.63 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 80.0 MB in the beginning and 99.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:56:54,574 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 111.4 MB in the beginning and 111.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.07 ms. Allocated memory is still 133.7 MB. Free memory was 108.9 MB in the beginning and 107.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.00 ms. Allocated memory is still 133.7 MB. Free memory was 107.0 MB in the beginning and 105.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 609.38 ms. Allocated memory is still 133.7 MB. Free memory was 105.1 MB in the beginning and 80.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8058.63 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 80.0 MB in the beginning and 99.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:207) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...