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/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:59:08,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:59:08,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:59:08,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:59:08,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:59:08,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:59:08,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:59:08,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:59:08,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:59:08,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:59:08,250 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:59:08,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:59:08,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:59:08,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:59:08,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:59:08,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:59:08,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:59:08,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:59:08,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:59:08,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:59:08,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:59:08,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:59:08,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:59:08,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:59:08,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:59:08,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:59:08,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:59:08,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:59:08,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:59:08,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:59:08,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:59:08,339 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:59:08,340 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:59:08,340 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl [2019-08-05 10:59:08,341 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl' [2019-08-05 10:59:08,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:59:08,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:59:08,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:59:08,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:59:08,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:59:08,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:59:08,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:59:08,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:59:08,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:59:08,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/1) ... [2019-08-05 10:59:08,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:59:08,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:59:08,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:59:08,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:59:08,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (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 10:59:08,556 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 10:59:08,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:59:08,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:59:08,930 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:59:08,930 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:59:08,932 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:59:08 BoogieIcfgContainer [2019-08-05 10:59:08,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:59:08,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:59:08,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:59:08,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:59:08,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:08" (1/2) ... [2019-08-05 10:59:08,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17226ca1 and model type ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:59:08, skipping insertion in model container [2019-08-05 10:59:08,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:59:08" (2/2) ... [2019-08-05 10:59:08,942 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl [2019-08-05 10:59:08,969 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:59:08,984 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:59:09,023 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:59:09,047 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:59:09,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:59:09,048 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:59:09,049 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:59:09,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:59:09,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:59:09,049 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:59:09,050 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:59:09,050 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:59:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-08-05 10:59:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:59:09,072 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:09,073 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 10:59:09,076 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash 28697802, now seen corresponding path program 1 times [2019-08-05 10:59:09,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:09,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:59:09,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:09,285 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 10:59:09,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:59:09,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:59:09,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:59:09,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:59:09,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:59:09,311 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-08-05 10:59:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:09,460 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-08-05 10:59:09,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:59:09,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:59:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:09,472 INFO L225 Difference]: With dead ends: 9 [2019-08-05 10:59:09,472 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 10:59:09,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 10:59:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 10:59:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-08-05 10:59:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 10:59:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-08-05 10:59:09,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-08-05 10:59:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:09,508 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-08-05 10:59:09,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:59:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-08-05 10:59:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 10:59:09,509 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:09,510 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-08-05 10:59:09,510 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1806601935, now seen corresponding path program 1 times [2019-08-05 10:59:09,512 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:09,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 32 conjunts are in the unsatisfiable core [2019-08-05 10:59:09,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:09,866 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:09,867 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2019-08-05 10:59:09,868 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:59:09,872 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:59:09,933 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:09,944 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2019-08-05 10:59:09,945 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 10:59:10,094 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-08-05 10:59:10,095 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:10,096 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 10:59:10,096 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:14 [2019-08-05 10:59:10,292 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-08-05 10:59:10,411 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 10:59:10,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:10,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:59:10,413 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:59:10,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:59:10,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:10,414 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 6 states. [2019-08-05 10:59:10,810 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-08-05 10:59:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:10,974 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2019-08-05 10:59:10,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:59:10,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-08-05 10:59:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:10,976 INFO L225 Difference]: With dead ends: 13 [2019-08-05 10:59:10,976 INFO L226 Difference]: Without dead ends: 13 [2019-08-05 10:59:10,978 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:59:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-08-05 10:59:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-08-05 10:59:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-08-05 10:59:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-08-05 10:59:10,981 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2019-08-05 10:59:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:10,981 INFO L475 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-08-05 10:59:10,981 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:59:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-08-05 10:59:10,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-08-05 10:59:10,982 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:10,982 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-08-05 10:59:10,983 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash 977724265, now seen corresponding path program 1 times [2019-08-05 10:59:10,984 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:11,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:59:11,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:59:11,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:11,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:59:11,323 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:59:11,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:59:11,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:11,324 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 6 states. [2019-08-05 10:59:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:11,486 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-08-05 10:59:11,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:59:11,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-08-05 10:59:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:11,488 INFO L225 Difference]: With dead ends: 16 [2019-08-05 10:59:11,488 INFO L226 Difference]: Without dead ends: 16 [2019-08-05 10:59:11,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-08-05 10:59:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-08-05 10:59:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-08-05 10:59:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-08-05 10:59:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-08-05 10:59:11,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-08-05 10:59:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:11,493 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-08-05 10:59:11,493 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:59:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-08-05 10:59:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-08-05 10:59:11,494 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:11,494 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2019-08-05 10:59:11,494 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:11,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1143014126, now seen corresponding path program 2 times [2019-08-05 10:59:11,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:11,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:59:11,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-08-05 10:59:11,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:11,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:59:11,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:59:11,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:59:11,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:59:11,646 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 5 states. [2019-08-05 10:59:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:11,705 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-08-05 10:59:11,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:59:11,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-08-05 10:59:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:11,707 INFO L225 Difference]: With dead ends: 14 [2019-08-05 10:59:11,707 INFO L226 Difference]: Without dead ends: 14 [2019-08-05 10:59:11,708 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-08-05 10:59:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-08-05 10:59:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-08-05 10:59:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-08-05 10:59:11,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-08-05 10:59:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:11,711 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-08-05 10:59:11,712 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:59:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-08-05 10:59:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-08-05 10:59:11,712 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:11,712 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2019-08-05 10:59:11,713 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:11,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1360430456, now seen corresponding path program 3 times [2019-08-05 10:59:11,714 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:11,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:59:11,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-08-05 10:59:11,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:11,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:59:11,850 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:59:11,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:59:11,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:59:11,850 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-08-05 10:59:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:11,882 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-08-05 10:59:11,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:59:11,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-08-05 10:59:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:11,883 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:59:11,884 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:59:11,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:59:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:59:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:59:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:59:11,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-08-05 10:59:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:11,886 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:59:11,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:59:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:59:11,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:59:11,893 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength2_true-valid-memsafety.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:59:11 BoogieIcfgContainer [2019-08-05 10:59:11,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:59:11,895 INFO L168 Benchmark]: Toolchain (without parser) took 3506.64 ms. Allocated memory was 137.4 MB in the beginning and 174.6 MB in the end (delta: 37.2 MB). Free memory was 109.2 MB in the beginning and 72.8 MB in the end (delta: 36.4 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:11,896 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory is still 110.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:59:11,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 137.4 MB. Free memory was 108.8 MB in the beginning and 107.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:11,898 INFO L168 Benchmark]: Boogie Preprocessor took 48.01 ms. Allocated memory is still 137.4 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:11,899 INFO L168 Benchmark]: RCFGBuilder took 450.41 ms. Allocated memory is still 137.4 MB. Free memory was 105.8 MB in the beginning and 91.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:11,900 INFO L168 Benchmark]: TraceAbstraction took 2958.59 ms. Allocated memory was 137.4 MB in the beginning and 174.6 MB in the end (delta: 37.2 MB). Free memory was 91.4 MB in the beginning and 72.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:11,904 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 137.4 MB. Free memory is still 110.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.64 ms. Allocated memory is still 137.4 MB. Free memory was 108.8 MB in the beginning and 107.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.01 ms. Allocated memory is still 137.4 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.41 ms. Allocated memory is still 137.4 MB. Free memory was 105.8 MB in the beginning and 91.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2958.59 ms. Allocated memory was 137.4 MB in the beginning and 174.6 MB in the end (delta: 37.2 MB). Free memory was 91.4 MB in the beginning and 72.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 178]: 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, 2.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 19 SDslu, 21 SDs, 0 SdLazy, 82 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1118 SizeOfPredicates, 37 NumberOfNonLiveVariables, 973 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 25/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...