java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/real-life/threadpooling_out2.mover.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:09:03,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:09:03,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:09:03,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:09:03,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:09:03,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:09:03,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:09:03,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:09:03,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:09:03,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:09:03,884 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:09:03,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:09:03,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:09:03,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:09:03,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:09:03,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:09:03,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:09:03,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:09:03,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:09:03,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:09:03,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:09:03,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:09:03,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:09:03,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:09:03,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:09:03,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:09:03,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:09:03,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:09:03,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:09:03,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:09:03,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:09:03,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:09:03,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:09:03,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:09:03,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:09:03,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:09:03,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:09:03,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:09:03,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:09:03,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:09:03,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:09:03,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:09:03,988 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:09:03,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:09:03,994 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:09:03,995 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:09:03,996 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out2.mover.bpl [2019-08-05 10:09:03,996 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_out2.mover.bpl' [2019-08-05 10:09:04,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:09:04,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:09:04,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:09:04,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:09:04,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:09:04,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,088 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:09:04,089 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:09:04,089 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:09:04,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:09:04,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:09:04,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:09:04,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:09:04,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... [2019-08-05 10:09:04,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:09:04,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:09:04,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:09:04,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:09:04,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:09:04,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2019-08-05 10:09:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure product [2019-08-05 10:09:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2019-08-05 10:09:04,728 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint productFINAL: assume true; [2019-08-05 10:09:04,819 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:09:04,820 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:09:04,821 INFO L202 PluginConnector]: Adding new model threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:09:04 BoogieIcfgContainer [2019-08-05 10:09:04,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:09:04,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:09:04,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:09:04,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:09:04,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:09:04" (1/2) ... [2019-08-05 10:09:04,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d949de7 and model type threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:09:04, skipping insertion in model container [2019-08-05 10:09:04,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:09:04" (2/2) ... [2019-08-05 10:09:04,829 INFO L109 eAbstractionObserver]: Analyzing ICFG threadpooling_out2.mover.bpl [2019-08-05 10:09:04,838 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:09:04,846 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-08-05 10:09:04,861 INFO L252 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-08-05 10:09:04,883 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:09:04,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:09:04,884 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:09:04,884 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:09:04,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:09:04,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:09:04,884 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:09:04,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:09:04,885 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:09:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-08-05 10:09:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:09:04,907 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:04,908 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:09:04,911 INFO L418 AbstractCegarLoop]: === Iteration 1 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:04,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:04,917 INFO L82 PathProgramCache]: Analyzing trace with hash 934210, now seen corresponding path program 1 times [2019-08-05 10:09:04,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:05,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:09:05,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:05,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:05,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:09:05,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:09:05,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:09:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:09:05,173 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-08-05 10:09:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:05,859 INFO L93 Difference]: Finished difference Result 28 states and 65 transitions. [2019-08-05 10:09:05,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:09:05,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-08-05 10:09:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:05,873 INFO L225 Difference]: With dead ends: 28 [2019-08-05 10:09:05,873 INFO L226 Difference]: Without dead ends: 28 [2019-08-05 10:09:05,875 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:09:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-08-05 10:09:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2019-08-05 10:09:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-08-05 10:09:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 48 transitions. [2019-08-05 10:09:05,913 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 48 transitions. Word has length 4 [2019-08-05 10:09:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:05,914 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 48 transitions. [2019-08-05 10:09:05,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:09:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 48 transitions. [2019-08-05 10:09:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:09:05,915 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:05,915 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:09:05,915 INFO L418 AbstractCegarLoop]: === Iteration 2 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1042904, now seen corresponding path program 1 times [2019-08-05 10:09:05,917 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:05,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:09:05,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:06,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:06,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:09:06,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:09:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:09:06,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:09:06,030 INFO L87 Difference]: Start difference. First operand 22 states and 48 transitions. Second operand 5 states. [2019-08-05 10:09:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:06,625 INFO L93 Difference]: Finished difference Result 34 states and 82 transitions. [2019-08-05 10:09:06,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:09:06,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-08-05 10:09:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:06,626 INFO L225 Difference]: With dead ends: 34 [2019-08-05 10:09:06,627 INFO L226 Difference]: Without dead ends: 34 [2019-08-05 10:09:06,628 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:09:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-08-05 10:09:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-08-05 10:09:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-08-05 10:09:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 77 transitions. [2019-08-05 10:09:06,635 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 77 transitions. Word has length 4 [2019-08-05 10:09:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:06,637 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 77 transitions. [2019-08-05 10:09:06,637 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:09:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 77 transitions. [2019-08-05 10:09:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:06,638 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:06,638 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:06,639 INFO L418 AbstractCegarLoop]: === Iteration 3 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:06,639 INFO L82 PathProgramCache]: Analyzing trace with hash 897576008, now seen corresponding path program 1 times [2019-08-05 10:09:06,640 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:06,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:06,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:06,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:06,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:06,712 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:06,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:06,713 INFO L87 Difference]: Start difference. First operand 32 states and 77 transitions. Second operand 6 states. [2019-08-05 10:09:07,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:07,724 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2019-08-05 10:09:07,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-08-05 10:09:07,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:07,729 INFO L225 Difference]: With dead ends: 126 [2019-08-05 10:09:07,729 INFO L226 Difference]: Without dead ends: 126 [2019-08-05 10:09:07,729 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-08-05 10:09:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-08-05 10:09:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 60. [2019-08-05 10:09:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-08-05 10:09:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 173 transitions. [2019-08-05 10:09:07,758 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 173 transitions. Word has length 6 [2019-08-05 10:09:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:07,759 INFO L475 AbstractCegarLoop]: Abstraction has 60 states and 173 transitions. [2019-08-05 10:09:07,759 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 173 transitions. [2019-08-05 10:09:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:07,761 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:07,761 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:07,762 INFO L418 AbstractCegarLoop]: === Iteration 4 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash 897578922, now seen corresponding path program 1 times [2019-08-05 10:09:07,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:07,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:07,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:07,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:07,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:07,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:07,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:07,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:07,867 INFO L87 Difference]: Start difference. First operand 60 states and 173 transitions. Second operand 6 states. [2019-08-05 10:09:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:08,339 INFO L93 Difference]: Finished difference Result 124 states and 328 transitions. [2019-08-05 10:09:08,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:09:08,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:08,344 INFO L225 Difference]: With dead ends: 124 [2019-08-05 10:09:08,344 INFO L226 Difference]: Without dead ends: 124 [2019-08-05 10:09:08,345 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:09:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-08-05 10:09:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 63. [2019-08-05 10:09:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-08-05 10:09:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 183 transitions. [2019-08-05 10:09:08,355 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 183 transitions. Word has length 6 [2019-08-05 10:09:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:08,356 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 183 transitions. [2019-08-05 10:09:08,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 183 transitions. [2019-08-05 10:09:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:08,357 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:08,357 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:08,357 INFO L418 AbstractCegarLoop]: === Iteration 5 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash 897783584, now seen corresponding path program 1 times [2019-08-05 10:09:08,359 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:08,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:08,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:08,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:08,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:08,433 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:08,434 INFO L87 Difference]: Start difference. First operand 63 states and 183 transitions. Second operand 6 states. [2019-08-05 10:09:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:08,752 INFO L93 Difference]: Finished difference Result 94 states and 259 transitions. [2019-08-05 10:09:08,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:09:08,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:08,760 INFO L225 Difference]: With dead ends: 94 [2019-08-05 10:09:08,760 INFO L226 Difference]: Without dead ends: 94 [2019-08-05 10:09:08,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:09:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-08-05 10:09:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 38. [2019-08-05 10:09:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-08-05 10:09:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 99 transitions. [2019-08-05 10:09:08,769 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 99 transitions. Word has length 6 [2019-08-05 10:09:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:08,770 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 99 transitions. [2019-08-05 10:09:08,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 99 transitions. [2019-08-05 10:09:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:08,772 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:08,773 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:08,773 INFO L418 AbstractCegarLoop]: === Iteration 6 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:08,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1002208758, now seen corresponding path program 1 times [2019-08-05 10:09:08,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:08,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:08,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:08,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:08,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:08,848 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:08,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:08,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:08,851 INFO L87 Difference]: Start difference. First operand 38 states and 99 transitions. Second operand 6 states. [2019-08-05 10:09:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:09,274 INFO L93 Difference]: Finished difference Result 77 states and 207 transitions. [2019-08-05 10:09:09,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:09:09,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:09,276 INFO L225 Difference]: With dead ends: 77 [2019-08-05 10:09:09,277 INFO L226 Difference]: Without dead ends: 77 [2019-08-05 10:09:09,277 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:09:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-08-05 10:09:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 36. [2019-08-05 10:09:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-08-05 10:09:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 93 transitions. [2019-08-05 10:09:09,283 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 93 transitions. Word has length 6 [2019-08-05 10:09:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:09,283 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 93 transitions. [2019-08-05 10:09:09,283 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 93 transitions. [2019-08-05 10:09:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:09,284 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:09,284 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:09,285 INFO L418 AbstractCegarLoop]: === Iteration 7 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:09,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1000027257, now seen corresponding path program 1 times [2019-08-05 10:09:09,286 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:09,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:09,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:09,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:09,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:09,392 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:09,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:09,393 INFO L87 Difference]: Start difference. First operand 36 states and 93 transitions. Second operand 6 states. [2019-08-05 10:09:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:09,877 INFO L93 Difference]: Finished difference Result 75 states and 196 transitions. [2019-08-05 10:09:09,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-08-05 10:09:09,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:09,880 INFO L225 Difference]: With dead ends: 75 [2019-08-05 10:09:09,880 INFO L226 Difference]: Without dead ends: 75 [2019-08-05 10:09:09,880 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:09:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-08-05 10:09:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2019-08-05 10:09:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-08-05 10:09:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 87 transitions. [2019-08-05 10:09:09,885 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 87 transitions. Word has length 6 [2019-08-05 10:09:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:09,885 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 87 transitions. [2019-08-05 10:09:09,885 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 87 transitions. [2019-08-05 10:09:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:09:09,886 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:09:09,886 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 10:09:09,886 INFO L418 AbstractCegarLoop]: === Iteration 8 === [productErr2ASSERT_VIOLATIONASSERT, productErr4ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr5ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:09:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:09:09,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1000030171, now seen corresponding path program 1 times [2019-08-05 10:09:09,888 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:09:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:09:09,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:09:09,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:09:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:09:09,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:09:09,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-08-05 10:09:09,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:09:09,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:09:09,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:09:09,977 INFO L87 Difference]: Start difference. First operand 35 states and 87 transitions. Second operand 6 states. [2019-08-05 10:09:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:09:10,481 INFO L93 Difference]: Finished difference Result 62 states and 167 transitions. [2019-08-05 10:09:10,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-08-05 10:09:10,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:09:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:09:10,483 INFO L225 Difference]: With dead ends: 62 [2019-08-05 10:09:10,483 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:09:10,484 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-08-05 10:09:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:09:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:09:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:09:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:09:10,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-08-05 10:09:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:09:10,486 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:09:10,486 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:09:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:09:10,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:09:10,491 INFO L202 PluginConnector]: Adding new model threadpooling_out2.mover.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:09:10 BoogieIcfgContainer [2019-08-05 10:09:10,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:09:10,494 INFO L168 Benchmark]: Toolchain (without parser) took 6440.79 ms. Allocated memory was 140.5 MB in the beginning and 240.1 MB in the end (delta: 99.6 MB). Free memory was 108.7 MB in the beginning and 93.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 114.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,495 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 109.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 140.5 MB. Free memory was 108.7 MB in the beginning and 106.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,497 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 ms. Allocated memory is still 140.5 MB. Free memory was 106.7 MB in the beginning and 105.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,498 INFO L168 Benchmark]: RCFGBuilder took 705.26 ms. Allocated memory is still 140.5 MB. Free memory was 105.6 MB in the beginning and 89.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,500 INFO L168 Benchmark]: TraceAbstraction took 5669.24 ms. Allocated memory was 140.5 MB in the beginning and 240.1 MB in the end (delta: 99.6 MB). Free memory was 89.5 MB in the beginning and 93.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 95.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:09:10,504 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 109.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 140.5 MB. Free memory was 108.7 MB in the beginning and 106.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.65 ms. Allocated memory is still 140.5 MB. Free memory was 106.7 MB in the beginning and 105.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 705.26 ms. Allocated memory is still 140.5 MB. Free memory was 105.6 MB in the beginning and 89.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5669.24 ms. Allocated memory was 140.5 MB in the beginning and 240.1 MB in the end (delta: 99.6 MB). Free memory was 89.5 MB in the beginning and 93.9 MB in the end (delta: -4.4 MB). Peak memory consumption was 95.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 171]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 181]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 60]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 176]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 186]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 6 error locations. SAFE Result, 5.6s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 123 SDtfs, 590 SDslu, 129 SDs, 0 SdLazy, 1602 SolverSat, 371 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 8 MinimizatonAttempts, 272 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 672 SizeOfPredicates, 28 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...