java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:40:18,495 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:40:18,498 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:40:18,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:40:18,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:40:18,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:40:18,513 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:40:18,515 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:40:18,516 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:40:18,517 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:40:18,518 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:40:18,518 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:40:18,519 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:40:18,520 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:40:18,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:40:18,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:40:18,523 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:40:18,525 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:40:18,527 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:40:18,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:40:18,530 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:40:18,531 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:40:18,533 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:40:18,534 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:40:18,534 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:40:18,535 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:40:18,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:40:18,536 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:40:18,537 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:40:18,538 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:40:18,539 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:40:18,539 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:40:18,540 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:40:18,540 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:40:18,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:40:18,542 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:40:18,542 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-07-25 13:40:18,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:40:18,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:40:18,560 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:40:18,560 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 13:40:18,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 13:40:18,563 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:18,563 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:40:18,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:40:18,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:40:18,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:40:18,637 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:40:18,638 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:40:18,638 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl [2018-07-25 13:40:18,638 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl' [2018-07-25 13:40:18,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:40:18,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:40:18,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:40:18,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:40:18,701 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:40:18,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,740 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:40:18,741 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:40:18,741 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:40:18,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:40:18,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:40:18,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:40:18,745 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:40:18,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/1) ... [2018-07-25 13:40:18,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:40:18,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:40:18,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:40:18,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:40:18,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (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 [2018-07-25 13:40:18,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-25 13:40:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-25 13:40:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-25 13:40:19,262 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:40:19,263 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:40:19 BoogieIcfgContainer [2018-07-25 13:40:19,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:40:19,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:40:19,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:40:19,268 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:40:19,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:40:18" (1/2) ... [2018-07-25 13:40:19,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748868e5 and model type threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:40:19, skipping insertion in model container [2018-07-25 13:40:19,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:40:19" (2/2) ... [2018-07-25 13:40:19,272 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product.bpl [2018-07-25 13:40:19,282 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:40:19,298 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-25 13:40:19,348 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:40:19,349 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:40:19,349 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:40:19,350 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 13:40:19,350 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:40:19,350 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:40:19,350 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:40:19,350 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:40:19,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:40:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-07-25 13:40:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:40:19,375 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:19,377 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 13:40:19,378 INFO L415 AbstractCegarLoop]: === Iteration 1 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:19,384 INFO L82 PathProgramCache]: Analyzing trace with hash 28755683, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:19,410 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:19,728 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:19,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:40:19,732 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:40:19,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:40:19,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:40:19,740 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-07-25 13:40:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:20,367 INFO L93 Difference]: Finished difference Result 44 states and 75 transitions. [2018-07-25 13:40:20,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:40:20,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 13:40:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:20,384 INFO L225 Difference]: With dead ends: 44 [2018-07-25 13:40:20,384 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:40:20,388 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:40:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:40:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2018-07-25 13:40:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 13:40:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2018-07-25 13:40:20,434 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 5 [2018-07-25 13:40:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:20,435 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2018-07-25 13:40:20,435 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:40:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2018-07-25 13:40:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:40:20,436 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:20,436 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 13:40:20,436 INFO L415 AbstractCegarLoop]: === Iteration 2 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash 28971747, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:20,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:20,704 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:20,704 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:40:20,705 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:40:20,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:40:20,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:40:20,706 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 6 states. [2018-07-25 13:40:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:21,365 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2018-07-25 13:40:21,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 13:40:21,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 13:40:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:21,368 INFO L225 Difference]: With dead ends: 51 [2018-07-25 13:40:21,368 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 13:40:21,371 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:40:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 13:40:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-07-25 13:40:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 13:40:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 55 transitions. [2018-07-25 13:40:21,381 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 55 transitions. Word has length 5 [2018-07-25 13:40:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:21,382 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 55 transitions. [2018-07-25 13:40:21,382 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:40:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 55 transitions. [2018-07-25 13:40:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:40:21,383 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:21,383 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:40:21,384 INFO L415 AbstractCegarLoop]: === Iteration 3 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1864688358, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:21,393 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:21,631 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:21,631 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 13:40:21,632 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:40:21,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:40:21,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:40:21,633 INFO L87 Difference]: Start difference. First operand 34 states and 55 transitions. Second operand 8 states. [2018-07-25 13:40:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:22,812 INFO L93 Difference]: Finished difference Result 82 states and 142 transitions. [2018-07-25 13:40:22,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:40:22,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-25 13:40:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:22,817 INFO L225 Difference]: With dead ends: 82 [2018-07-25 13:40:22,817 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 13:40:22,819 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:40:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 13:40:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2018-07-25 13:40:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 13:40:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2018-07-25 13:40:22,835 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 7 [2018-07-25 13:40:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:22,835 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2018-07-25 13:40:22,835 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:40:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2018-07-25 13:40:22,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:40:22,836 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:22,837 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-07-25 13:40:22,837 INFO L415 AbstractCegarLoop]: === Iteration 4 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:22,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1865765160, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:22,858 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:23,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:23,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:40:23,064 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:40:23,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:40:23,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-25 13:40:23,065 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 6 states. [2018-07-25 13:40:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:23,372 INFO L93 Difference]: Finished difference Result 70 states and 121 transitions. [2018-07-25 13:40:23,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:40:23,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 13:40:23,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:23,375 INFO L225 Difference]: With dead ends: 70 [2018-07-25 13:40:23,376 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 13:40:23,376 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-07-25 13:40:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 13:40:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2018-07-25 13:40:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 13:40:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 80 transitions. [2018-07-25 13:40:23,390 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 80 transitions. Word has length 7 [2018-07-25 13:40:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:23,391 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 80 transitions. [2018-07-25 13:40:23,391 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:40:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 80 transitions. [2018-07-25 13:40:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:40:23,392 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:23,392 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:40:23,393 INFO L415 AbstractCegarLoop]: === Iteration 5 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:23,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2072633864, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:23,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:23,584 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:23,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 13:40:23,584 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:40:23,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:40:23,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:40:23,585 INFO L87 Difference]: Start difference. First operand 47 states and 80 transitions. Second operand 7 states. [2018-07-25 13:40:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:24,123 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2018-07-25 13:40:24,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 13:40:24,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 13:40:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:24,127 INFO L225 Difference]: With dead ends: 108 [2018-07-25 13:40:24,127 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 13:40:24,128 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-07-25 13:40:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 13:40:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 55. [2018-07-25 13:40:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 13:40:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 95 transitions. [2018-07-25 13:40:24,147 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 95 transitions. Word has length 7 [2018-07-25 13:40:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:24,148 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 95 transitions. [2018-07-25 13:40:24,148 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:40:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 95 transitions. [2018-07-25 13:40:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:40:24,149 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:24,149 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 13:40:24,150 INFO L415 AbstractCegarLoop]: === Iteration 6 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:24,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2071833542, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:24,167 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:24,405 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:40:24,406 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 13:40:24,406 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:40:24,407 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:40:24,407 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-07-25 13:40:24,407 INFO L87 Difference]: Start difference. First operand 55 states and 95 transitions. Second operand 8 states. [2018-07-25 13:40:25,040 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-25 13:40:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:40:25,557 INFO L93 Difference]: Finished difference Result 116 states and 205 transitions. [2018-07-25 13:40:25,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 13:40:25,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-25 13:40:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:40:25,560 INFO L225 Difference]: With dead ends: 116 [2018-07-25 13:40:25,560 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 13:40:25,561 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-07-25 13:40:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 13:40:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 56. [2018-07-25 13:40:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 13:40:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 97 transitions. [2018-07-25 13:40:25,583 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 97 transitions. Word has length 7 [2018-07-25 13:40:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:40:25,583 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 97 transitions. [2018-07-25 13:40:25,583 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:40:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 97 transitions. [2018-07-25 13:40:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:40:25,584 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:40:25,585 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 13:40:25,585 INFO L415 AbstractCegarLoop]: === Iteration 7 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:40:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1962114806, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:40:25,593 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:40:31,490 WARN L169 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2018-07-25 13:41:28,298 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2018-07-25 13:41:56,493 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2018-07-25 13:42:35,131 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2018-07-25 13:43:26,163 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-07-25 13:44:32,936 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 Received shutdown request... [2018-07-25 13:44:49,001 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:44:49,002 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:44:49,008 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:44:49,008 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:44:49 BoogieIcfgContainer [2018-07-25 13:44:49,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:44:49,009 INFO L168 Benchmark]: Toolchain (without parser) took 270313.48 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -225.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 334.2 MB). Peak memory consumption was 108.8 MB. Max. memory is 7.1 GB. [2018-07-25 13:44:49,010 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:44:49,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:44:49,012 INFO L168 Benchmark]: Boogie Preprocessor took 26.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:44:49,012 INFO L168 Benchmark]: RCFGBuilder took 492.35 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. [2018-07-25 13:44:49,013 INFO L168 Benchmark]: TraceAbstraction took 269743.53 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -225.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 313.1 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:44:49,017 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 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.79 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 26.48 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 492.35 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 269743.53 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -225.4 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 313.1 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 85). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 142 known predicates. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 74). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 142 known predicates. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 142 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 94). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 142 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. TIMEOUT Result, 269.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 264 SDtfs, 289 SDslu, 389 SDs, 0 SdLazy, 1022 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 195 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s 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.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-44-49-030.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-44-49-030.csv Completed graceful shutdown