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/regression/bpl/BugFreshConstantInSSA.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:08:24,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:08:24,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:08:24,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:08:24,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:08:24,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:08:24,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:08:24,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:08:24,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:08:24,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:08:24,321 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:08:24,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:08:24,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:08:24,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:08:24,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:08:24,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:08:24,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:08:24,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:08:24,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:08:24,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:08:24,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:08:24,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:08:24,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:08:24,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:08:24,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:08:24,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:08:24,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:08:24,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:08:24,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:08:24,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:08:24,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:08:24,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:08:24,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:08:24,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:08:24,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:08:24,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:08:24,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:08:24,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:08:24,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:08:24,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:08:24,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:08:24,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:08:24,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:08:24,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:08:24,417 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:08:24,417 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:08:24,418 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/BugFreshConstantInSSA.bpl [2019-08-05 11:08:24,419 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/BugFreshConstantInSSA.bpl' [2019-08-05 11:08:24,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:08:24,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:08:24,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:08:24,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:08:24,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:08:24,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,487 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:08:24,488 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:08:24,488 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:08:24,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:08:24,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:08:24,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:08:24,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:08:24,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/1) ... [2019-08-05 11:08:24,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:08:24,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:08:24,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:08:24,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:08:24,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (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 11:08:24,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 11:08:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 11:08:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 11:08:24,812 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:08:24,812 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:08:24,813 INFO L202 PluginConnector]: Adding new model BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:08:24 BoogieIcfgContainer [2019-08-05 11:08:24,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:08:24,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:08:24,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:08:24,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:08:24,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:08:24" (1/2) ... [2019-08-05 11:08:24,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c724671 and model type BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:08:24, skipping insertion in model container [2019-08-05 11:08:24,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:08:24" (2/2) ... [2019-08-05 11:08:24,822 INFO L109 eAbstractionObserver]: Analyzing ICFG BugFreshConstantInSSA.bpl [2019-08-05 11:08:24,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:08:24,843 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:08:24,860 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:08:24,886 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:08:24,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:08:24,888 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:08:24,888 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:08:24,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:08:24,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:08:24,888 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:08:24,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:08:24,889 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:08:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 11:08:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:08:24,911 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:24,912 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:08:24,915 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash 30368, now seen corresponding path program 1 times [2019-08-05 11:08:24,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:24,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:08:24,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:25,033 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 11:08:25,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:08:25,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:08:25,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:08:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:08:25,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:25,068 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 11:08:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:25,186 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-08-05 11:08:25,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:08:25,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:08:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:25,199 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:08:25,200 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:08:25,202 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:08:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:08:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:08:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:08:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:08:25,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:08:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:25,236 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:08:25,237 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:08:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:08:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:08:25,237 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:25,238 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:08:25,238 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash 949084, now seen corresponding path program 1 times [2019-08-05 11:08:25,240 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:08:25,246 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 11:08:25,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:08:25,272 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:08:25,273 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 11:08:25,433 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2019-08-05 11:08:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:08:25,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:08:25,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2019-08-05 11:08:25,436 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:08:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:08:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:08:25,437 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 11:08:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:08:25,469 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 11:08:25,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:08:25,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 11:08:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:08:25,470 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:08:25,471 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:08:25,472 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:08:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:08:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:08:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:08:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 11:08:25,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 11:08:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:08:25,475 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 11:08:25,475 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:08:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 11:08:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:08:25,476 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:08:25,476 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 11:08:25,476 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:08:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:08:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash 29429280, now seen corresponding path program 2 times [2019-08-05 11:08:25,478 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:08:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 11:08:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 11:08:25,513 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 11:08:25,534 INFO L202 PluginConnector]: Adding new model BugFreshConstantInSSA.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:08:25 BoogieIcfgContainer [2019-08-05 11:08:25,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:08:25,537 INFO L168 Benchmark]: Toolchain (without parser) took 1082.91 ms. Allocated memory is still 141.0 MB. Free memory was 110.7 MB in the beginning and 68.4 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,538 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 111.9 MB in the beginning and 111.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 141.0 MB. Free memory was 110.7 MB in the beginning and 108.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,541 INFO L168 Benchmark]: Boogie Preprocessor took 21.94 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 107.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,542 INFO L168 Benchmark]: RCFGBuilder took 300.34 ms. Allocated memory is still 141.0 MB. Free memory was 107.6 MB in the beginning and 96.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,543 INFO L168 Benchmark]: TraceAbstraction took 719.98 ms. Allocated memory is still 141.0 MB. Free memory was 96.5 MB in the beginning and 68.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:08:25,548 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 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 111.9 MB in the beginning and 111.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.17 ms. Allocated memory is still 141.0 MB. Free memory was 110.7 MB in the beginning and 108.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.94 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 107.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 300.34 ms. Allocated memory is still 141.0 MB. Free memory was 107.6 MB in the beginning and 96.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 719.98 ms. Allocated memory is still 141.0 MB. Free memory was 96.5 MB in the beginning and 68.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 29]: assertion can be violated assertion can be violated We found a FailurePath: [L16] x := false; VAL [x=false] [L18] COND TRUE z == false [L22] x := true; [L24] COND FALSE !(y == true) VAL [x=true, y=false, z=false] [L18] COND TRUE z == false [L20] z := true; [L24] COND FALSE !(y == true) VAL [x=true, y=false, z=true] [L18] COND FALSE !(z == false) VAL [x=true, y=false, z=true] [L29] assert !x; VAL [x=true, y=false, z=true] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 11 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 2 NumberOfNonLiveVariables, 13 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...