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-smtinterpol.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 14:34:11,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 14:34:11,208 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 14:34:11,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 14:34:11,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 14:34:11,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 14:34:11,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 14:34:11,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 14:34:11,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 14:34:11,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 14:34:11,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 14:34:11,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 14:34:11,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 14:34:11,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 14:34:11,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 14:34:11,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 14:34:11,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 14:34:11,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 14:34:11,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 14:34:11,239 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 14:34:11,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 14:34:11,242 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 14:34:11,244 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 14:34:11,244 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 14:34:11,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 14:34:11,246 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 14:34:11,247 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 14:34:11,248 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 14:34:11,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 14:34:11,250 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 14:34:11,250 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 14:34:11,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 14:34:11,251 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 14:34:11,251 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 14:34:11,253 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 14:34:11,253 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 14:34:11,254 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf [2018-07-25 14:34:11,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 14:34:11,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 14:34:11,264 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 14:34:11,265 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 14:34:11,265 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 14:34:11,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 14:34:11,265 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 14:34:11,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 14:34:11,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 14:34:11,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 14:34:11,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 14:34:11,346 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 14:34:11,347 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 14:34:11,348 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl [2018-07-25 14:34:11,348 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl' [2018-07-25 14:34:11,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 14:34:11,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 14:34:11,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 14:34:11,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 14:34:11,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 14:34:11,427 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,440 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,445 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 14:34:11,446 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 14:34:11,446 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 14:34:11,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 14:34:11,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 14:34:11,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 14:34:11,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 14:34:11,462 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,462 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,463 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,464 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,468 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,472 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,474 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 02:34:11" (1/1) ... [2018-07-25 14:34:11,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 14:34:11,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 14:34:11,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 14:34:11,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 14:34:11,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:34:11" (1/1) ... [2018-07-25 14:34:11,571 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-25 14:34:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-25 14:34:11,572 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-25 14:34:11,741 INFO L270 CfgBuilder]: Using library mode [2018-07-25 14:34:11,742 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 02:34:11 BoogieIcfgContainer [2018-07-25 14:34:11,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 14:34:11,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 14:34:11,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 14:34:11,747 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 14:34:11,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 02:34:11" (1/2) ... [2018-07-25 14:34:11,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582b1866 and model type threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 02:34:11, skipping insertion in model container [2018-07-25 14:34:11,750 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 02:34:11" (2/2) ... [2018-07-25 14:34:11,753 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product.bpl [2018-07-25 14:34:11,764 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 14:34:11,773 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-25 14:34:11,831 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 14:34:11,832 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 14:34:11,832 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 14:34:11,832 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 14:34:11,832 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 14:34:11,832 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 14:34:11,833 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 14:34:11,833 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 14:34:11,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 14:34:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-07-25 14:34:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 14:34:11,863 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:11,864 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 14:34:11,866 INFO L415 AbstractCegarLoop]: === Iteration 1 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash 28755683, now seen corresponding path program 1 times [2018-07-25 14:34:11,882 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:12,063 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:12,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 14:34:12,067 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:34:12,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:34:12,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 14:34:12,076 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-07-25 14:34:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:12,298 INFO L93 Difference]: Finished difference Result 44 states and 75 transitions. [2018-07-25 14:34:12,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 14:34:12,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 14:34:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:12,316 INFO L225 Difference]: With dead ends: 44 [2018-07-25 14:34:12,316 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 14:34:12,320 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 14:34:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 14:34:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2018-07-25 14:34:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-25 14:34:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2018-07-25 14:34:12,365 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 5 [2018-07-25 14:34:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:12,365 INFO L472 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2018-07-25 14:34:12,366 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:34:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2018-07-25 14:34:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 14:34:12,367 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:12,367 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 14:34:12,367 INFO L415 AbstractCegarLoop]: === Iteration 2 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 28971747, now seen corresponding path program 1 times [2018-07-25 14:34:12,368 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:12,486 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:12,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 14:34:12,487 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:34:12,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:34:12,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-25 14:34:12,489 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 6 states. [2018-07-25 14:34:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:12,668 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2018-07-25 14:34:12,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-25 14:34:12,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 14:34:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:12,673 INFO L225 Difference]: With dead ends: 51 [2018-07-25 14:34:12,674 INFO L226 Difference]: Without dead ends: 49 [2018-07-25 14:34:12,676 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-25 14:34:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-07-25 14:34:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-07-25 14:34:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-07-25 14:34:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 55 transitions. [2018-07-25 14:34:12,687 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 55 transitions. Word has length 5 [2018-07-25 14:34:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:12,687 INFO L472 AbstractCegarLoop]: Abstraction has 34 states and 55 transitions. [2018-07-25 14:34:12,687 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:34:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 55 transitions. [2018-07-25 14:34:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 14:34:12,688 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:12,689 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:34:12,689 INFO L415 AbstractCegarLoop]: === Iteration 3 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1864688358, now seen corresponding path program 1 times [2018-07-25 14:34:12,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:12,845 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:12,847 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 14:34:12,848 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 14:34:12,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 14:34:12,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-07-25 14:34:12,849 INFO L87 Difference]: Start difference. First operand 34 states and 55 transitions. Second operand 8 states. [2018-07-25 14:34:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:13,283 INFO L93 Difference]: Finished difference Result 82 states and 142 transitions. [2018-07-25 14:34:13,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 14:34:13,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-25 14:34:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:13,285 INFO L225 Difference]: With dead ends: 82 [2018-07-25 14:34:13,286 INFO L226 Difference]: Without dead ends: 80 [2018-07-25 14:34:13,288 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-07-25 14:34:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-07-25 14:34:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2018-07-25 14:34:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-25 14:34:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2018-07-25 14:34:13,313 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 7 [2018-07-25 14:34:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:13,316 INFO L472 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2018-07-25 14:34:13,316 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 14:34:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2018-07-25 14:34:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 14:34:13,317 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:13,317 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-07-25 14:34:13,319 INFO L415 AbstractCegarLoop]: === Iteration 4 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1865765160, now seen corresponding path program 1 times [2018-07-25 14:34:13,320 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:13,397 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:13,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 14:34:13,398 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 14:34:13,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 14:34:13,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-25 14:34:13,399 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 6 states. [2018-07-25 14:34:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:13,542 INFO L93 Difference]: Finished difference Result 70 states and 121 transitions. [2018-07-25 14:34:13,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 14:34:13,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-07-25 14:34:13,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:13,545 INFO L225 Difference]: With dead ends: 70 [2018-07-25 14:34:13,545 INFO L226 Difference]: Without dead ends: 68 [2018-07-25 14:34:13,546 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-07-25 14:34:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-07-25 14:34:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2018-07-25 14:34:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-07-25 14:34:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 80 transitions. [2018-07-25 14:34:13,571 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 80 transitions. Word has length 7 [2018-07-25 14:34:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:13,571 INFO L472 AbstractCegarLoop]: Abstraction has 47 states and 80 transitions. [2018-07-25 14:34:13,571 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 14:34:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 80 transitions. [2018-07-25 14:34:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 14:34:13,573 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:13,573 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:34:13,574 INFO L415 AbstractCegarLoop]: === Iteration 5 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2072633864, now seen corresponding path program 1 times [2018-07-25 14:34:13,574 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:13,622 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:13,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-25 14:34:13,623 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 14:34:13,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 14:34:13,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-25 14:34:13,626 INFO L87 Difference]: Start difference. First operand 47 states and 80 transitions. Second operand 7 states. [2018-07-25 14:34:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:13,839 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2018-07-25 14:34:13,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-25 14:34:13,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-07-25 14:34:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:13,841 INFO L225 Difference]: With dead ends: 108 [2018-07-25 14:34:13,841 INFO L226 Difference]: Without dead ends: 106 [2018-07-25 14:34:13,845 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-07-25 14:34:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-07-25 14:34:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 55. [2018-07-25 14:34:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-25 14:34:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 95 transitions. [2018-07-25 14:34:13,880 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 95 transitions. Word has length 7 [2018-07-25 14:34:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:13,880 INFO L472 AbstractCegarLoop]: Abstraction has 55 states and 95 transitions. [2018-07-25 14:34:13,885 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 14:34:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 95 transitions. [2018-07-25 14:34:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 14:34:13,886 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:13,886 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-25 14:34:13,886 INFO L415 AbstractCegarLoop]: === Iteration 6 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2071833542, now seen corresponding path program 1 times [2018-07-25 14:34:13,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 14:34:13,939 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 14:34:13,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-25 14:34:13,940 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 14:34:13,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 14:34:13,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-07-25 14:34:13,941 INFO L87 Difference]: Start difference. First operand 55 states and 95 transitions. Second operand 8 states. [2018-07-25 14:34:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 14:34:14,155 INFO L93 Difference]: Finished difference Result 116 states and 205 transitions. [2018-07-25 14:34:14,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-25 14:34:14,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-07-25 14:34:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 14:34:14,157 INFO L225 Difference]: With dead ends: 116 [2018-07-25 14:34:14,157 INFO L226 Difference]: Without dead ends: 114 [2018-07-25 14:34:14,158 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-07-25 14:34:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-07-25 14:34:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 56. [2018-07-25 14:34:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-07-25 14:34:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 97 transitions. [2018-07-25 14:34:14,192 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 97 transitions. Word has length 7 [2018-07-25 14:34:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 14:34:14,193 INFO L472 AbstractCegarLoop]: Abstraction has 56 states and 97 transitions. [2018-07-25 14:34:14,193 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 14:34:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 97 transitions. [2018-07-25 14:34:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 14:34:14,194 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 14:34:14,196 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-07-25 14:34:14,196 INFO L415 AbstractCegarLoop]: === Iteration 7 === [productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-07-25 14:34:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1962114806, now seen corresponding path program 1 times [2018-07-25 14:34:14,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Received shutdown request... [2018-07-25 14:38:35,620 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 14:38:35,625 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 14:38:35,626 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 02:38:35 BoogieIcfgContainer [2018-07-25 14:38:35,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 14:38:35,627 INFO L168 Benchmark]: Toolchain (without parser) took 264223.97 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.3 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 451.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2018-07-25 14:38:35,631 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 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 14:38:35,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.34 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 14:38:35,636 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 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 14:38:35,637 INFO L168 Benchmark]: RCFGBuilder took 265.30 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 14:38:35,639 INFO L168 Benchmark]: TraceAbstraction took 263882.81 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.3 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 440.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-07-25 14:38:35,645 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 0.15 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 44.34 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 26.77 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 265.30 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263882.81 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.3 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 440.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 196 known predicates. - 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 196 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 196 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 196 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. TIMEOUT Result, 263.8s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 264 SDtfs, 289 SDslu, 389 SDs, 0 SdLazy, 1022 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.8s 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: 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.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_14-38-35-659.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_14-38-35-659.csv Completed graceful shutdown