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/pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:25:28,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:25:28,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:25:28,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:25:28,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:25:28,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:25:28,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:25:28,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:25:28,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:25:28,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:25:28,962 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:25:28,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:25:28,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:25:28,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:25:28,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:25:28,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:25:28,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:25:28,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:25:28,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:25:28,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:25:28,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:25:28,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:25:28,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:25:28,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:25:28,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:25:28,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:25:28,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:25:28,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:25:28,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:25:28,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:25:28,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:25:28,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:25:28,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:25:28,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:25:28,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:25:28,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:25:28,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:25:28,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:25:28,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:25:28,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:25:28,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:25:29,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:25:29,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:25:29,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:25:29,045 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:25:29,046 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:25:29,046 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl [2019-08-05 10:25:29,046 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl' [2019-08-05 10:25:29,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:25:29,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:25:29,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:25:29,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:25:29,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:25:29,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:25:29,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:25:29,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:25:29,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:25:29,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/1) ... [2019-08-05 10:25:29,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:25:29,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:25:29,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:25:29,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:25:29,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (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 10:25:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:25:29,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:25:30,171 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:25:30,171 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:25:30,173 INFO L202 PluginConnector]: Adding new model pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:25:30 BoogieIcfgContainer [2019-08-05 10:25:30,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:25:30,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:25:30,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:25:30,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:25:30,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:25:29" (1/2) ... [2019-08-05 10:25:30,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa6ed46 and model type pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:25:30, skipping insertion in model container [2019-08-05 10:25:30,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:25:30" (2/2) ... [2019-08-05 10:25:30,182 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl [2019-08-05 10:25:30,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:25:30,199 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:25:30,215 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:25:30,240 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:25:30,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:25:30,242 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:25:30,242 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:25:30,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:25:30,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:25:30,242 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:25:30,243 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:25:30,243 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:25:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:25:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:25:30,265 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:30,266 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:25:30,269 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:30,275 INFO L82 PathProgramCache]: Analyzing trace with hash 987460, now seen corresponding path program 1 times [2019-08-05 10:25:30,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:25:30,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-05 10:25:30,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:25:30,652 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:30,677 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:30,700 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:30,775 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 10:25:30,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:25:30,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:25:30,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:25:30,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:25:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:25:30,802 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:25:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:25:30,886 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:25:30,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:25:30,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:25:30,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:25:30,896 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:25:30,896 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:25:30,898 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:25:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:25:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:25:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:25:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:25:30,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:25:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:25:30,931 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:25:30,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:25:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:25:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:25:30,932 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:30,932 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:25:30,932 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:30,933 INFO L82 PathProgramCache]: Analyzing trace with hash 948907289, now seen corresponding path program 1 times [2019-08-05 10:25:30,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:25:31,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-05 10:25:31,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:25:31,121 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,224 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,228 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,238 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,282 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 10:25:31,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:25:31,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:25:31,284 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:25:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:25:31,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:25:31,285 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:25:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:25:31,448 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:25:31,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:25:31,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:25:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:25:31,450 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:25:31,450 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:25:31,452 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:25:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:25:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:25:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:25:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:25:31,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:25:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:25:31,455 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:25:31,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:25:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:25:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:25:31,455 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:31,456 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:25:31,456 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:31,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1366796206, now seen corresponding path program 2 times [2019-08-05 10:25:31,458 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:25:31,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjunts are in the unsatisfiable core [2019-08-05 10:25:31,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:25:31,583 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,790 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2019-08-05 10:25:31,793 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:31,795 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:32,569 WARN L188 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2019-08-05 10:25:32,571 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:32,699 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:32,700 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:25:32,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:25:32,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 10:25:32,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:25:32,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:25:32,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:25:32,766 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2019-08-05 10:25:33,111 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2019-08-05 10:25:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:25:33,174 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-08-05 10:25:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 10:25:33,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-08-05 10:25:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:25:33,175 INFO L225 Difference]: With dead ends: 11 [2019-08-05 10:25:33,175 INFO L226 Difference]: Without dead ends: 11 [2019-08-05 10:25:33,176 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-08-05 10:25:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-08-05 10:25:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-08-05 10:25:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:25:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:25:33,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-05 10:25:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:25:33,180 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:25:33,180 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:25:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:25:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:25:33,181 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:25:33,181 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-05 10:25:33,181 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:25:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:25:33,181 INFO L82 PathProgramCache]: Analyzing trace with hash -768880381, now seen corresponding path program 3 times [2019-08-05 10:25:33,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:25:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:25:33,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:25:33,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:25:33,370 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:33,376 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:25:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-05 10:25:33,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:25:33,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:25:33,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:25:33,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:25:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:25:33,472 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-05 10:25:33,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:25:33,490 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 10:25:33,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:25:33,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:25:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:25:33,491 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:25:33,491 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:25:33,492 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:25:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:25:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:25:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:25:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:25:33,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-05 10:25:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:25:33,493 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:25:33,493 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:25:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:25:33,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:25:33,498 INFO L202 PluginConnector]: Adding new model pals_lcr.3.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:25:33 BoogieIcfgContainer [2019-08-05 10:25:33,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:25:33,500 INFO L168 Benchmark]: Toolchain (without parser) took 4399.66 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 109.2 MB in the beginning and 167.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:33,501 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 111.1 MB in the beginning and 110.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-08-05 10:25:33,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.36 ms. Allocated memory is still 141.6 MB. Free memory was 109.0 MB in the beginning and 107.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:33,503 INFO L168 Benchmark]: Boogie Preprocessor took 29.68 ms. Allocated memory is still 141.6 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:33,504 INFO L168 Benchmark]: RCFGBuilder took 1004.49 ms. Allocated memory is still 141.6 MB. Free memory was 105.9 MB in the beginning and 69.6 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:25:33,505 INFO L168 Benchmark]: TraceAbstraction took 3323.40 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 69.4 MB in the beginning and 167.8 MB in the end (delta: -98.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:25:33,509 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 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 111.1 MB in the beginning and 110.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.36 ms. Allocated memory is still 141.6 MB. Free memory was 109.0 MB in the beginning and 107.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.68 ms. Allocated memory is still 141.6 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1004.49 ms. Allocated memory is still 141.6 MB. Free memory was 105.9 MB in the beginning and 69.6 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3323.40 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 69.4 MB in the beginning and 167.8 MB in the end (delta: -98.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 300]: 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, 3.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 51 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 2245 SizeOfPredicates, 69 NumberOfNonLiveVariables, 522 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...