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_WithoutIf.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:42:59,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:42:59,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:42:59,185 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:42:59,185 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:42:59,186 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:42:59,187 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:42:59,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:42:59,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:42:59,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:42:59,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:42:59,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:42:59,194 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:42:59,195 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:42:59,196 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:42:59,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:42:59,197 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:42:59,199 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:42:59,201 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:42:59,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:42:59,204 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:42:59,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:42:59,208 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:42:59,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:42:59,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:42:59,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:42:59,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:42:59,213 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:42:59,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:42:59,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:42:59,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:42:59,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:42:59,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:42:59,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:42:59,220 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:42:59,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:42:59,222 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 13:42:59,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:42:59,236 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:42:59,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:42:59,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-07-25 13:42:59,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-25 13:42:59,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:42:59,239 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:42:59,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:42:59,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:42:59,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:42:59,306 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:42:59,306 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:42:59,307 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl [2018-07-25 13:42:59,308 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl' [2018-07-25 13:42:59,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:42:59,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:42:59,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:42:59,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:42:59,360 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:42:59,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,398 WARN L165 Inliner]: Program contained no entry procedure! [2018-07-25 13:42:59,398 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-07-25 13:42:59,398 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-07-25 13:42:59,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:42:59,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:42:59,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:42:59,402 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:42:59,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/1) ... [2018-07-25 13:42:59,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:42:59,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:42:59,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:42:59,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:42:59,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (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 13:42:59,504 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-07-25 13:42:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-07-25 13:42:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-07-25 13:42:59,917 INFO L270 CfgBuilder]: Using library mode [2018-07-25 13:42:59,918 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:42:59 BoogieIcfgContainer [2018-07-25 13:42:59,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:42:59,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:42:59,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:42:59,923 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:42:59,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:42:59" (1/2) ... [2018-07-25 13:42:59,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8c75a4 and model type threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:42:59, skipping insertion in model container [2018-07-25 13:42:59,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:42:59" (2/2) ... [2018-07-25 13:42:59,926 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithoutIf.bpl [2018-07-25 13:42:59,936 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:42:59,945 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-07-25 13:42:59,993 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:42:59,994 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:42:59,994 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:42:59,994 INFO L376 AbstractCegarLoop]: Compute interpolants for PDR [2018-07-25 13:42:59,995 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:42:59,995 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:42:59,995 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:42:59,995 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:42:59,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:43:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-07-25 13:43:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:43:00,020 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:43:00,021 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:43:00,022 INFO L415 AbstractCegarLoop]: === Iteration 1 === [productErr3ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:43:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 927686, 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 13:43:00,054 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:43:00,287 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:43:00,287 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:43:00,291 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:43:00,296 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:43:00,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:43:00,299 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-07-25 13:43:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:43:00,728 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2018-07-25 13:43:00,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:43:00,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-25 13:43:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:43:00,745 INFO L225 Difference]: With dead ends: 26 [2018-07-25 13:43:00,745 INFO L226 Difference]: Without dead ends: 24 [2018-07-25 13:43:00,748 INFO L574 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 [2018-07-25 13:43:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-07-25 13:43:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-07-25 13:43:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-07-25 13:43:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-07-25 13:43:00,790 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 4 [2018-07-25 13:43:00,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:43:00,791 INFO L472 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-07-25 13:43:00,791 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:43:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2018-07-25 13:43:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:43:00,792 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:43:00,792 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:43:00,793 INFO L415 AbstractCegarLoop]: === Iteration 2 === [productErr3ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:43:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash 930088, 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 13:43:00,805 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:43:00,933 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:43:00,933 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:43:00,934 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:43:00,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:43:00,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:43:00,935 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 5 states. [2018-07-25 13:43:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:43:01,219 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2018-07-25 13:43:01,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:43:01,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-07-25 13:43:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:43:01,222 INFO L225 Difference]: With dead ends: 28 [2018-07-25 13:43:01,222 INFO L226 Difference]: Without dead ends: 26 [2018-07-25 13:43:01,224 INFO L574 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 [2018-07-25 13:43:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-07-25 13:43:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-07-25 13:43:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-25 13:43:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2018-07-25 13:43:01,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 4 [2018-07-25 13:43:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:43:01,232 INFO L472 AbstractCegarLoop]: Abstraction has 26 states and 39 transitions. [2018-07-25 13:43:01,233 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:43:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2018-07-25 13:43:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:43:01,234 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:43:01,234 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 13:43:01,234 INFO L415 AbstractCegarLoop]: === Iteration 3 === [productErr3ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:43:01,235 INFO L82 PathProgramCache]: Analyzing trace with hash 28768015, 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 13:43:01,243 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:43:01,386 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:43:01,386 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:43:01,387 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:43:01,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:43:01,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:43:01,388 INFO L87 Difference]: Start difference. First operand 26 states and 39 transitions. Second operand 6 states. [2018-07-25 13:43:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:43:02,044 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2018-07-25 13:43:02,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:43:02,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 13:43:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:43:02,046 INFO L225 Difference]: With dead ends: 37 [2018-07-25 13:43:02,047 INFO L226 Difference]: Without dead ends: 35 [2018-07-25 13:43:02,047 INFO L574 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 [2018-07-25 13:43:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-07-25 13:43:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-07-25 13:43:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-25 13:43:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2018-07-25 13:43:02,057 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 5 [2018-07-25 13:43:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:43:02,058 INFO L472 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2018-07-25 13:43:02,058 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:43:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2018-07-25 13:43:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-07-25 13:43:02,059 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:43:02,059 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-07-25 13:43:02,059 INFO L415 AbstractCegarLoop]: === Iteration 4 === [productErr3ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:43:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash 28831153, 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 13:43:02,077 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:43:02,203 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:43:02,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-25 13:43:02,204 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:43:02,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:43:02,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-07-25 13:43:02,205 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand 6 states. [2018-07-25 13:43:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:43:02,496 INFO L93 Difference]: Finished difference Result 44 states and 68 transitions. [2018-07-25 13:43:02,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-25 13:43:02,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-07-25 13:43:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:43:02,498 INFO L225 Difference]: With dead ends: 44 [2018-07-25 13:43:02,498 INFO L226 Difference]: Without dead ends: 42 [2018-07-25 13:43:02,499 INFO L574 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 [2018-07-25 13:43:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-25 13:43:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-07-25 13:43:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-07-25 13:43:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2018-07-25 13:43:02,508 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 5 [2018-07-25 13:43:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:43:02,509 INFO L472 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2018-07-25 13:43:02,509 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:43:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2018-07-25 13:43:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-25 13:43:02,510 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:43:02,510 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-07-25 13:43:02,510 INFO L415 AbstractCegarLoop]: === Iteration 5 === [productErr3ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:43:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1866934377, 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 13:43:02,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:43:53,797 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-07-25 13:44:19,587 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-07-25 13:44:56,033 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-07-25 13:45:27,639 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-25 13:45:45,954 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-07-25 13:46:53,341 WARN L169 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2018-07-25 13:47:20,228 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 84 Received shutdown request... [2018-07-25 13:47:32,100 WARN L513 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-07-25 13:47:32,100 WARN L541 AbstractCegarLoop]: Verification canceled [2018-07-25 13:47:32,107 WARN L202 ceAbstractionStarter]: Timeout [2018-07-25 13:47:32,107 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:47:32 BoogieIcfgContainer [2018-07-25 13:47:32,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:47:32,109 INFO L168 Benchmark]: Toolchain (without parser) took 272751.23 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -200.8 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 192.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:47:32,110 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 13:47:32,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.51 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 13:47:32,111 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 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 13:47:32,112 INFO L168 Benchmark]: RCFGBuilder took 495.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 13:47:32,113 INFO L168 Benchmark]: TraceAbstraction took 272188.38 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -200.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 171.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 13:47:32,122 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 41.51 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 21.01 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 495.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 272188.38 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -200.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 171.0 MB). There was no memory consumed. 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: 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. - 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. - 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, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s 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-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-47-32-141.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-47-32-141.csv Completed graceful shutdown