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/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:59:19,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:59:19,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:59:19,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:59:19,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:59:19,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:59:19,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:59:19,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:59:19,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:59:19,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:59:19,112 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:59:19,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:59:19,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:59:19,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:59:19,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:59:19,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:59:19,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:59:19,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:59:19,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:59:19,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:59:19,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:59:19,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:59:19,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:59:19,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:59:19,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:59:19,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:59:19,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:59:19,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:59:19,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:59:19,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:59:19,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:59:19,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:59:19,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:59:19,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:59:19,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:59:19,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:59:19,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:59:19,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:59:19,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:59:19,196 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:59:19,196 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:59:19,197 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl [2019-08-05 10:59:19,198 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl' [2019-08-05 10:59:19,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:59:19,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:59:19,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:59:19,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:59:19,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:59:19,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:59:19,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:59:19,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:59:19,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:59:19,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/1) ... [2019-08-05 10:59:19,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:59:19,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:59:19,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:59:19,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:59:19,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (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 10:59:19,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 10:59:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:59:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:59:19,686 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:59:19,686 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:59:19,688 INFO L202 PluginConnector]: Adding new model reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:59:19 BoogieIcfgContainer [2019-08-05 10:59:19,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:59:19,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:59:19,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:59:19,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:59:19,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:59:19" (1/2) ... [2019-08-05 10:59:19,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4521ecc2 and model type reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:59:19, skipping insertion in model container [2019-08-05 10:59:19,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:59:19" (2/2) ... [2019-08-05 10:59:19,699 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl [2019-08-05 10:59:19,710 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:59:19,720 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:59:19,736 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:59:19,758 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:59:19,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:59:19,759 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:59:19,759 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:59:19,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:59:19,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:59:19,759 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:59:19,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:59:19,760 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:59:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:59:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:59:19,778 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:19,779 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:59:19,782 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2019-08-05 10:59:19,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:19,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2019-08-05 10:59:19,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:20,059 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-08-05 10:59:20,060 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:59:20,173 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-08-05 10:59:20,174 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:20,176 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-08-05 10:59:20,176 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:18 [2019-08-05 10:59:20,285 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 10:59:20,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:59:20,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:59:20,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:59:20,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:59:20,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:59:20,306 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:59:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:20,438 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:59:20,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:59:20,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:59:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:20,448 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:59:20,449 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:59:20,450 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 10:59:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:59:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:59:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:59:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:59:20,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:59:20,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:20,484 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:59:20,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:59:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:59:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:59:20,485 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:20,485 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:59:20,486 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2019-08-05 10:59:20,488 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:20,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 23 conjunts are in the unsatisfiable core [2019-08-05 10:59:20,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:20,596 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-08-05 10:59:20,596 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:59:20,724 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-08-05 10:59:20,725 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:20,726 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 10:59:20,726 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:14 [2019-08-05 10:59:21,070 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 10:59:21,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:21,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:59:21,072 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:59:21,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:59:21,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:59:21,073 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:59:21,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:21,321 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:59:21,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:59:21,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:59:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:21,323 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:59:21,323 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:59:21,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:59:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:59:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:59:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:59:21,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:59:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:21,329 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:59:21,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:59:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:59:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:59:21,331 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:59:21,331 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:59:21,332 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:59:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:59:21,332 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2019-08-05 10:59:21,333 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:59:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:59:21,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2019-08-05 10:59:21,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:59:21,457 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-08-05 10:59:21,457 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:59:21,510 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:59:21,511 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 10:59:21,511 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:11 [2019-08-05 10:59:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 10:59:21,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:59:21,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:59:21,721 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:59:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:59:21,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:59:21,722 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-05 10:59:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:59:23,708 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:59:23,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:59:23,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-08-05 10:59:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:59:23,711 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:59:23,711 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:59:23,712 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:59:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:59:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:59:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:59:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:59:23,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-08-05 10:59:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:59:23,714 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:59:23,714 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:59:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:59:23,714 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:59:23,721 INFO L202 PluginConnector]: Adding new model reverse_array_alloca_unsafe_false-valid-deref.i_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:59:23 BoogieIcfgContainer [2019-08-05 10:59:23,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:59:23,724 INFO L168 Benchmark]: Toolchain (without parser) took 4466.40 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 107.5 MB in the beginning and 109.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,725 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.01 ms. Allocated memory is still 140.5 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 140.5 MB. Free memory was 107.3 MB in the beginning and 105.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,727 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 140.5 MB. Free memory was 105.7 MB in the beginning and 104.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,728 INFO L168 Benchmark]: RCFGBuilder took 356.92 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 92.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,729 INFO L168 Benchmark]: TraceAbstraction took 4032.48 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 92.2 MB in the beginning and 109.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:59:23,733 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 1.01 ms. Allocated memory is still 140.5 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 140.5 MB. Free memory was 107.3 MB in the beginning and 105.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 140.5 MB. Free memory was 105.7 MB in the beginning and 104.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.92 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 92.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4032.48 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 92.2 MB in the beginning and 109.1 MB in the end (delta: -16.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 104]: 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, 6 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 5 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 5 QuantifiedInterpolants, 1211 SizeOfPredicates, 43 NumberOfNonLiveVariables, 183 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...