java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:50:15,088 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:50:15,090 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:50:15,103 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:50:15,104 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:50:15,105 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:50:15,106 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:50:15,108 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:50:15,110 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:50:15,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:50:15,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:50:15,112 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:50:15,113 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:50:15,114 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:50:15,115 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:50:15,116 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:50:15,117 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:50:15,118 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:50:15,121 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:50:15,122 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:50:15,123 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:50:15,124 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:50:15,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:50:15,127 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:50:15,127 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:50:15,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:50:15,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:50:15,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:50:15,131 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:50:15,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:50:15,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:50:15,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:50:15,133 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:50:15,133 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:50:15,134 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:50:15,135 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:50:15,135 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:50:15,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:50:15,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:50:15,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:50:15,156 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:50:15,156 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:50:15,156 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:50:15,156 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:50:15,157 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:50:15,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:50:15,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:50:15,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:50:15,235 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:50:15,235 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:50:15,236 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl [2018-07-25 08:50:15,236 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/veris.c_NetBSD-libc__loop.i_2.bpl' [2018-07-25 08:50:15,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:50:15,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:50:15,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:50:15,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:50:15,304 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:50:15,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:50:15,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:50:15,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:50:15,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:50:15,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:50:15,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:50:15,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:50:15,389 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:50:15,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/1) ... [2018-07-25 08:50:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:50:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:50:15,707 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:50:15,708 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:50:15 BoogieIcfgContainer [2018-07-25 08:50:15,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:50:15,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:50:15,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:50:15,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:50:15,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:50:15" (1/2) ... [2018-07-25 08:50:15,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c5d451 and model type veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:50:15, skipping insertion in model container [2018-07-25 08:50:15,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:50:15" (2/2) ... [2018-07-25 08:50:15,720 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc__loop.i_2.bpl [2018-07-25 08:50:15,730 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:50:15,741 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:50:15,787 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:50:15,788 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:50:15,788 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:50:15,788 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:50:15,789 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:50:15,789 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:50:15,789 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:50:15,789 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:50:15,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:50:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:50:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:50:15,811 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:15,812 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:50:15,813 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:15,818 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-07-25 08:50:15,825 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:15,941 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:50:15,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:50:15,946 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:50:15,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:50:15,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:50:15,966 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:50:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,023 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:50:16,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:50:16,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:50:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,036 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:50:16,037 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:50:16,040 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:50:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:50:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:50:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:50:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:50:16,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:50:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,077 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:50:16,077 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:50:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:50:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:50:16,078 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,078 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:50:16,079 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-07-25 08:50:16,079 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,162 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:50:16,163 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:50:16,167 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:50:16,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:50:16,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:50:16,168 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:50:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,268 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:50:16,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:50:16,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:50:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,269 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:50:16,270 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:50:16,272 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-25 08:50:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:50:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:50:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:50:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:50:16,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:50:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,278 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:50:16,278 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:50:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:50:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:50:16,280 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:50:16,280 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:50:16,281 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:50:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-07-25 08:50:16,281 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:50:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:50:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:50:16,370 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:50:16,370 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 08:50:16,371 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:50:16,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:50:16,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:50:16,372 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-07-25 08:50:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:50:16,410 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-07-25 08:50:16,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:50:16,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-07-25 08:50:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:50:16,411 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:50:16,411 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:50:16,412 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:50:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:50:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:50:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:50:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:50:16,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 08:50:16,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:50:16,414 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:50:16,414 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:50:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:50:16,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:50:16,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:50:16,479 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 12 83) the Hoare annotation is: false [2018-07-25 08:50:16,480 INFO L418 ceAbstractionStarter]: At program point L64(lines 64 77) the Hoare annotation is: (let ((.cse0 (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))) (or (and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset) .cse0) (let ((.cse1 (+ ULTIMATE.start_glob2_~p~4.offset 4))) (and (<= .cse1 ~tmp.offset) (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_glob2_~pathlim.offset .cse1) .cse0)))) [2018-07-25 08:50:16,481 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 12 83) the Hoare annotation is: true [2018-07-25 08:50:16,481 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 12 83) no Hoare annotation was computed. [2018-07-25 08:50:16,481 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 82) the Hoare annotation is: false [2018-07-25 08:50:16,481 INFO L418 ceAbstractionStarter]: At program point L80(lines 80 81) the Hoare annotation is: false [2018-07-25 08:50:16,482 INFO L418 ceAbstractionStarter]: At program point L76(lines 57 76) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (= ~tmp.base ULTIMATE.start_glob2_~p~4.base))) (or (and (<= ULTIMATE.start_glob2_~p~4.offset ~tmp.offset) .cse0 (<= ULTIMATE.start_glob2_~pathlim.offset ULTIMATE.start_glob2_~p~4.offset) .cse1) (and .cse0 (<= (+ ULTIMATE.start_glob2_~pathlim.offset 4) ULTIMATE.start_glob2_~p~4.offset)) (let ((.cse2 (+ ULTIMATE.start_glob2_~p~4.offset 4))) (and (<= .cse2 ~tmp.offset) (<= ULTIMATE.start_glob2_~pathlim.offset .cse2) .cse1)))) [2018-07-25 08:50:16,508 INFO L202 PluginConnector]: Adding new model veris.c_NetBSD-libc__loop.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:50:16 BoogieIcfgContainer [2018-07-25 08:50:16,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:50:16,509 INFO L168 Benchmark]: Toolchain (without parser) took 1207.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:50:16,512 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:16,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:16,515 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:50:16,515 INFO L168 Benchmark]: RCFGBuilder took 319.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:50:16,516 INFO L168 Benchmark]: TraceAbstraction took 798.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 08:50:16,521 INFO L336 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 319.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 798.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: 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 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((glob2_~p~4.offset <= ~tmp.offset && !(0 == __VERIFIER_assert_~cond)) && glob2_~pathlim.offset <= glob2_~p~4.offset) && ~tmp.base == glob2_~p~4.base) || (((glob2_~p~4.offset + 4 <= ~tmp.offset && __VERIFIER_assert_~cond == 1) && glob2_~pathlim.offset <= glob2_~p~4.offset + 4) && ~tmp.base == glob2_~p~4.base) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((glob2_~p~4.offset <= ~tmp.offset && !(0 == __VERIFIER_assert_~cond)) && glob2_~pathlim.offset <= glob2_~p~4.offset) && ~tmp.base == glob2_~p~4.base) || (!(0 == __VERIFIER_assert_~cond) && glob2_~pathlim.offset + 4 <= glob2_~p~4.offset)) || ((glob2_~p~4.offset + 4 <= ~tmp.offset && glob2_~pathlim.offset <= glob2_~p~4.offset + 4) && ~tmp.base == glob2_~p~4.base) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 10 SDs, 0 SdLazy, 25 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 11 NumberOfFragments, 75 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_NetBSD-libc__loop.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-50-16-545.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_NetBSD-libc__loop.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-50-16-545.csv Received shutdown request...