java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-56c9370 [2018-07-23 15:43:25,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 15:43:25,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 15:43:25,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 15:43:25,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 15:43:25,388 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 15:43:25,389 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 15:43:25,391 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 15:43:25,393 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 15:43:25,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 15:43:25,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 15:43:25,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 15:43:25,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 15:43:25,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 15:43:25,398 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 15:43:25,399 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 15:43:25,400 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 15:43:25,402 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 15:43:25,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 15:43:25,416 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 15:43:25,417 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 15:43:25,418 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 15:43:25,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 15:43:25,423 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 15:43:25,424 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 15:43:25,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 15:43:25,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 15:43:25,426 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 15:43:25,427 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 15:43:25,428 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 15:43:25,428 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 15:43:25,429 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 15:43:25,429 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 15:43:25,429 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 15:43:25,430 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 15:43:25,431 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 15:43:25,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-pdr.epf [2018-07-23 15:43:25,439 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 15:43:25,440 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 15:43:25,441 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 15:43:25,441 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-23 15:43:25,441 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 15:43:25,442 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 15:43:25,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 15:43:25,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 15:43:25,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 15:43:25,511 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 15:43:25,512 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 15:43:25,513 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl [2018-07-23 15:43:25,513 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl' [2018-07-23 15:43:25,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 15:43:25,575 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 15:43:25,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 15:43:25,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 15:43:25,576 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 15:43:25,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/1) ... [2018-07-23 15:43:25,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 15:43:25,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 15:43:25,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 15:43:25,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 15:43:25,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (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 [2018-07-23 15:43:25,714 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-23 15:43:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-23 15:43:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-23 15:43:26,143 INFO L258 CfgBuilder]: Using library mode [2018-07-23 15:43:26,144 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:43:26 BoogieIcfgContainer [2018-07-23 15:43:26,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 15:43:26,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 15:43:26,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 15:43:26,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 15:43:26,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 03:43:25" (1/2) ... [2018-07-23 15:43:26,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c87ece and model type threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 03:43:26, skipping insertion in model container [2018-07-23 15:43:26,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:43:26" (2/2) ... [2018-07-23 15:43:26,155 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithoutIf.bpl [2018-07-23 15:43:26,168 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-23 15:43:26,178 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-23 15:43:26,256 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 15:43:26,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 15:43:26,258 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 15:43:26,258 INFO L375 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-23 15:43:26,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 15:43:26,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 15:43:26,259 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 15:43:26,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 15:43:26,259 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 15:43:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-07-23 15:43:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:43:26,310 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:43:26,311 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:43:26,311 INFO L414 AbstractCegarLoop]: === Iteration 1 === [productErr3AssertViolationASSERT, productErr0AssertViolationASSERT, productErr1AssertViolationASSERT, productErr2AssertViolationASSERT]=== [2018-07-23 15:43:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 927686, now seen corresponding path program 1 times [2018-07-23 15:43:26,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:43:26,528 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:43:26,529 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:43:26,533 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:43:26,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:43:26,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:43:26,541 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-07-23 15:43:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:43:26,951 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2018-07-23 15:43:26,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:43:26,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:43:26,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:43:26,965 INFO L225 Difference]: With dead ends: 26 [2018-07-23 15:43:26,965 INFO L226 Difference]: Without dead ends: 24 [2018-07-23 15:43:26,969 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:43:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-23 15:43:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-07-23 15:43:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-23 15:43:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-07-23 15:43:27,010 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 4 [2018-07-23 15:43:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:43:27,010 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-07-23 15:43:27,010 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:43:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2018-07-23 15:43:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 15:43:27,011 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:43:27,011 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 15:43:27,011 INFO L414 AbstractCegarLoop]: === Iteration 2 === [productErr3AssertViolationASSERT, productErr0AssertViolationASSERT, productErr1AssertViolationASSERT, productErr2AssertViolationASSERT]=== [2018-07-23 15:43:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 930088, now seen corresponding path program 1 times [2018-07-23 15:43:27,012 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:43:27,156 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:43:27,157 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 15:43:27,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 15:43:27,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 15:43:27,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-23 15:43:27,159 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 5 states. [2018-07-23 15:43:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:43:27,415 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2018-07-23 15:43:27,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 15:43:27,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-23 15:43:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:43:27,417 INFO L225 Difference]: With dead ends: 28 [2018-07-23 15:43:27,418 INFO L226 Difference]: Without dead ends: 26 [2018-07-23 15:43:27,421 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-07-23 15:43:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-23 15:43:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-23 15:43:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 15:43:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2018-07-23 15:43:27,434 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 4 [2018-07-23 15:43:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:43:27,434 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 39 transitions. [2018-07-23 15:43:27,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 15:43:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2018-07-23 15:43:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:43:27,435 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:43:27,435 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-23 15:43:27,436 INFO L414 AbstractCegarLoop]: === Iteration 3 === [productErr3AssertViolationASSERT, productErr0AssertViolationASSERT, productErr1AssertViolationASSERT, productErr2AssertViolationASSERT]=== [2018-07-23 15:43:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash 28768015, now seen corresponding path program 1 times [2018-07-23 15:43:27,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:43:27,532 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:43:27,533 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:43:27,533 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:43:27,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:43:27,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:43:27,534 INFO L87 Difference]: Start difference. First operand 26 states and 39 transitions. Second operand 6 states. [2018-07-23 15:43:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:43:28,235 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2018-07-23 15:43:28,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:43:28,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-23 15:43:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:43:28,239 INFO L225 Difference]: With dead ends: 37 [2018-07-23 15:43:28,239 INFO L226 Difference]: Without dead ends: 35 [2018-07-23 15:43:28,240 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:43:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-23 15:43:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-07-23 15:43:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-23 15:43:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2018-07-23 15:43:28,250 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 5 [2018-07-23 15:43:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:43:28,250 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2018-07-23 15:43:28,250 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:43:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2018-07-23 15:43:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-23 15:43:28,251 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:43:28,251 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-23 15:43:28,252 INFO L414 AbstractCegarLoop]: === Iteration 4 === [productErr3AssertViolationASSERT, productErr0AssertViolationASSERT, productErr1AssertViolationASSERT, productErr2AssertViolationASSERT]=== [2018-07-23 15:43:28,252 INFO L82 PathProgramCache]: Analyzing trace with hash 28831153, now seen corresponding path program 1 times [2018-07-23 15:43:28,252 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:43:28,337 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 15:43:28,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 15:43:28,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 15:43:28,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 15:43:28,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-23 15:43:28,339 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand 6 states. [2018-07-23 15:43:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 15:43:28,610 INFO L93 Difference]: Finished difference Result 44 states and 68 transitions. [2018-07-23 15:43:28,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 15:43:28,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-23 15:43:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 15:43:28,613 INFO L225 Difference]: With dead ends: 44 [2018-07-23 15:43:28,614 INFO L226 Difference]: Without dead ends: 42 [2018-07-23 15:43:28,615 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-23 15:43:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-23 15:43:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-07-23 15:43:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-23 15:43:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2018-07-23 15:43:28,625 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 5 [2018-07-23 15:43:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 15:43:28,625 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2018-07-23 15:43:28,625 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 15:43:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2018-07-23 15:43:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 15:43:28,626 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 15:43:28,627 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-07-23 15:43:28,627 INFO L414 AbstractCegarLoop]: === Iteration 5 === [productErr3AssertViolationASSERT, productErr0AssertViolationASSERT, productErr1AssertViolationASSERT, productErr2AssertViolationASSERT]=== [2018-07-23 15:43:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1866934377, now seen corresponding path program 1 times [2018-07-23 15:43:28,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 15:44:18,528 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-07-23 15:44:43,650 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-07-23 15:45:19,363 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-07-23 15:46:08,070 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-07-23 15:46:49,800 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-07-23 15:47:14,221 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 Received shutdown request... [2018-07-23 15:47:58,366 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 15:47:58,371 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 15:47:58,371 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 03:47:58 BoogieIcfgContainer [2018-07-23 15:47:58,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 15:47:58,372 INFO L168 Benchmark]: Toolchain (without parser) took 272798.33 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 402.5 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. [2018-07-23 15:47:58,374 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:47:58,374 INFO L168 Benchmark]: Boogie Preprocessor took 53.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 15:47:58,375 INFO L168 Benchmark]: RCFGBuilder took 515.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 15:47:58,376 INFO L168 Benchmark]: TraceAbstraction took 272224.39 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 381.3 MB). Peak memory consumption was 154.8 MB. Max. memory is 7.1 GB. [2018-07-23 15:47:58,380 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 515.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 272224.39 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 381.3 MB). Peak memory consumption was 154.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 78). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 58). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 69). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. TIMEOUT Result, 272.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 105 SDtfs, 76 SDslu, 86 SDs, 0 SdLazy, 351 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s PdrRuntime, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_AutomizerBpl-pdr.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_15-47-58-393.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_AutomizerBpl-pdr.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_15-47-58-393.csv Completed graceful shutdown