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/20170304-DifficultPathPrograms/afnp2014.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:27:58,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:27:58,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:27:58,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:27:58,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:27:58,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:27:58,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:27:58,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:27:58,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:27:58,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:27:58,850 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:27:58,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:27:58,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:27:58,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:27:58,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:27:58,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:27:58,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:27:58,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:27:58,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:27:58,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:27:58,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:27:58,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:27:58,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:27:58,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:27:58,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-04 21:27:58,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-04 21:27:58,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-04 21:27:58,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-04 21:27:58,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-04 21:27:58,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-04 21:27:58,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:27:58,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:27:58,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:27:58,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:27:58,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:27:58,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:27:58,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:27:58,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:27:58,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:27:58,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:27:58,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:27:58,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:27:58,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:27:58,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:27:58,922 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:27:58,923 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:27:58,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/afnp2014.c.i_3.bpl [2019-08-04 21:27:58,924 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/afnp2014.c.i_3.bpl' [2019-08-04 21:27:58,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:27:58,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:27:58,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:27:58,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:27:58,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:27:58,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:58,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:58,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:27:58,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:27:58,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:27:58,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:27:59,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/1) ... [2019-08-04 21:27:59,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:27:59,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:27:59,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:27:59,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:27:59,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (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 [2019-08-04 21:27:59,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-04 21:27:59,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-04 21:27:59,354 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-04 21:27:59,355 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-04 21:27:59,357 INFO L202 PluginConnector]: Adding new model afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:27:59 BoogieIcfgContainer [2019-08-04 21:27:59,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:27:59,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:27:59,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:27:59,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:27:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:58" (1/2) ... [2019-08-04 21:27:59,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7796e03d and model type afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:27:59, skipping insertion in model container [2019-08-04 21:27:59,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:27:59" (2/2) ... [2019-08-04 21:27:59,369 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.c.i_3.bpl [2019-08-04 21:27:59,381 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:27:59,390 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:27:59,408 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:27:59,439 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:27:59,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:27:59,440 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:27:59,440 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:27:59,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:27:59,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:27:59,441 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:27:59,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:27:59,441 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:27:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-04 21:27:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-04 21:27:59,465 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:27:59,467 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-04 21:27:59,471 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:27:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:27:59,476 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2019-08-04 21:27:59,527 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:27:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:27:59,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-04 21:27:59,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:27:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:27:59,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:27:59,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-04 21:27:59,669 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-04 21:27:59,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-04 21:27:59,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-04 21:27:59,688 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-08-04 21:27:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:27:59,779 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-04 21:27:59,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-04 21:27:59,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-04 21:27:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:27:59,795 INFO L225 Difference]: With dead ends: 7 [2019-08-04 21:27:59,795 INFO L226 Difference]: Without dead ends: 7 [2019-08-04 21:27:59,797 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-04 21:27:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-04 21:27:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-04 21:27:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-04 21:27:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-04 21:27:59,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-04 21:27:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:27:59,837 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-04 21:27:59,837 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-04 21:27:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-04 21:27:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-04 21:27:59,839 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:27:59,839 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-04 21:27:59,839 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:27:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:27:59,840 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2019-08-04 21:27:59,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:27:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:27:59,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-04 21:27:59,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:27:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:27:59,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:27:59,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-04 21:27:59,984 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:27:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:27:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:27:59,985 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-08-04 21:28:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:28:00,059 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-04 21:28:00,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:28:00,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-08-04 21:28:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:28:00,060 INFO L225 Difference]: With dead ends: 9 [2019-08-04 21:28:00,061 INFO L226 Difference]: Without dead ends: 9 [2019-08-04 21:28:00,062 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:28:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-04 21:28:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-04 21:28:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-04 21:28:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-04 21:28:00,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-04 21:28:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:28:00,065 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-04 21:28:00,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:28:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-04 21:28:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-04 21:28:00,066 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:28:00,066 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-04 21:28:00,067 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:28:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:28:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2019-08-04 21:28:00,068 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:28:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:28:00,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-04 21:28:00,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:28:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:28:00,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:28:00,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-04 21:28:00,187 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-04 21:28:00,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-04 21:28:00,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:28:00,188 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-08-04 21:28:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:28:00,235 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-04 21:28:00,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-04 21:28:00,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-08-04 21:28:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:28:00,237 INFO L225 Difference]: With dead ends: 7 [2019-08-04 21:28:00,237 INFO L226 Difference]: Without dead ends: 0 [2019-08-04 21:28:00,237 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-08-04 21:28:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-04 21:28:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-04 21:28:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-04 21:28:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-04 21:28:00,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-08-04 21:28:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:28:00,239 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-04 21:28:00,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-04 21:28:00,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-04 21:28:00,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-04 21:28:00,246 INFO L202 PluginConnector]: Adding new model afnp2014.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:28:00 BoogieIcfgContainer [2019-08-04 21:28:00,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:28:00,249 INFO L168 Benchmark]: Toolchain (without parser) took 1286.09 ms. Allocated memory is still 140.5 MB. Free memory was 110.0 MB in the beginning and 63.2 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,250 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 111.3 MB in the beginning and 111.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.44 ms. Allocated memory is still 140.5 MB. Free memory was 109.8 MB in the beginning and 108.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,253 INFO L168 Benchmark]: Boogie Preprocessor took 19.14 ms. Allocated memory is still 140.5 MB. Free memory was 108.3 MB in the beginning and 107.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,254 INFO L168 Benchmark]: RCFGBuilder took 341.23 ms. Allocated memory is still 140.5 MB. Free memory was 107.2 MB in the beginning and 97.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,255 INFO L168 Benchmark]: TraceAbstraction took 884.02 ms. Allocated memory is still 140.5 MB. Free memory was 97.3 MB in the beginning and 63.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2019-08-04 21:28:00,260 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 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 111.3 MB in the beginning and 111.1 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 34.44 ms. Allocated memory is still 140.5 MB. Free memory was 109.8 MB in the beginning and 108.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.14 ms. Allocated memory is still 140.5 MB. Free memory was 108.3 MB in the beginning and 107.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.23 ms. Allocated memory is still 140.5 MB. Free memory was 107.2 MB in the beginning and 97.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.02 ms. Allocated memory is still 140.5 MB. Free memory was 97.3 MB in the beginning and 63.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 0.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 15 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 12 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...