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/random/RanFile091.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:05:52,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:05:52,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:05:52,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:05:52,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:05:52,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:05:52,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:05:52,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:05:52,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:05:52,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:05:52,346 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:05:52,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:05:52,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:05:52,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:05:52,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:05:52,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:05:52,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:05:52,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:05:52,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:05:52,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:05:52,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:05:52,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:05:52,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:05:52,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:05:52,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:05:52,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:05:52,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:05:52,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:05:52,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:05:52,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:05:52,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:05:52,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:05:52,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:05:52,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:05:52,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:05:52,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:05:52,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:05:52,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:05:52,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:05:52,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:05:52,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:05:52,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:05:52,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:05:52,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:05:52,428 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:05:52,428 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:05:52,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/random/RanFile091.bpl [2019-08-05 10:05:52,430 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/random/RanFile091.bpl' [2019-08-05 10:05:52,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:05:52,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:05:52,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:05:52,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:05:52,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:05:52,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,581 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:05:52,581 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:05:52,581 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:05:52,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:05:52,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:05:52,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:05:52,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:05:52,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/1) ... [2019-08-05 10:05:52,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:05:52,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:05:52,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:05:52,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:05:52,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (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 10:05:52,767 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:05:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:05:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:05:56,880 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:05:56,881 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:05:56,882 INFO L202 PluginConnector]: Adding new model RanFile091.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:05:56 BoogieIcfgContainer [2019-08-05 10:05:56,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:05:56,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:05:56,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:05:56,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:05:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:05:52" (1/2) ... [2019-08-05 10:05:56,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfff76e and model type RanFile091.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:05:56, skipping insertion in model container [2019-08-05 10:05:56,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RanFile091.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:05:56" (2/2) ... [2019-08-05 10:05:56,890 INFO L109 eAbstractionObserver]: Analyzing ICFG RanFile091.bpl [2019-08-05 10:05:56,899 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:05:56,907 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 10:05:56,923 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 10:05:56,948 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:05:56,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:05:56,949 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:05:56,949 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:05:56,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:05:56,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:05:56,950 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:05:56,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:05:56,951 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:05:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2019-08-05 10:05:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-08-05 10:05:56,981 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:05:56,982 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:05:56,985 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:05:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:05:56,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1674607958, now seen corresponding path program 1 times [2019-08-05 10:05:57,037 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:05:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:05:57,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2019-08-05 10:05:57,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:05:57,103 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 10:05:57,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:05:57,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:05:57,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-08-05 10:05:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-08-05 10:05:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 10:05:57,128 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 2 states. [2019-08-05 10:05:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:05:57,153 INFO L93 Difference]: Finished difference Result 120 states and 216 transitions. [2019-08-05 10:05:57,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-08-05 10:05:57,155 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-08-05 10:05:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:05:57,168 INFO L225 Difference]: With dead ends: 120 [2019-08-05 10:05:57,168 INFO L226 Difference]: Without dead ends: 110 [2019-08-05 10:05:57,170 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 10:05:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-08-05 10:05:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-08-05 10:05:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-08-05 10:05:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 197 transitions. [2019-08-05 10:05:57,217 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 197 transitions. Word has length 35 [2019-08-05 10:05:57,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:05:57,217 INFO L475 AbstractCegarLoop]: Abstraction has 110 states and 197 transitions. [2019-08-05 10:05:57,217 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-08-05 10:05:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 197 transitions. [2019-08-05 10:05:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-08-05 10:05:57,219 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:05:57,220 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:05:57,220 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:05:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:05:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1276197170, now seen corresponding path program 1 times [2019-08-05 10:05:57,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:05:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:05:57,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:05:57,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:05:57,369 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 10:05:57,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:05:57,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:05:57,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:05:57,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:05:57,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:05:57,378 INFO L87 Difference]: Start difference. First operand 110 states and 197 transitions. Second operand 3 states. [2019-08-05 10:05:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:05:57,945 INFO L93 Difference]: Finished difference Result 115 states and 205 transitions. [2019-08-05 10:05:57,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:05:57,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-08-05 10:05:57,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:05:57,948 INFO L225 Difference]: With dead ends: 115 [2019-08-05 10:05:57,950 INFO L226 Difference]: Without dead ends: 110 [2019-08-05 10:05:57,951 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:05:57,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-08-05 10:05:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-08-05 10:05:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-08-05 10:05:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 196 transitions. [2019-08-05 10:05:57,962 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 196 transitions. Word has length 36 [2019-08-05 10:05:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:05:57,963 INFO L475 AbstractCegarLoop]: Abstraction has 110 states and 196 transitions. [2019-08-05 10:05:57,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:05:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 196 transitions. [2019-08-05 10:05:57,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-08-05 10:05:57,965 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:05:57,965 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:05:57,965 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:05:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:05:57,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1918455504, now seen corresponding path program 1 times [2019-08-05 10:05:57,967 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:05:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:05:58,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:05:58,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:05:59,197 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 10:05:59,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:05:59,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-08-05 10:05:59,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-08-05 10:05:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-08-05 10:05:59,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:05:59,200 INFO L87 Difference]: Start difference. First operand 110 states and 196 transitions. Second operand 11 states. [2019-08-05 10:06:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:03,756 INFO L93 Difference]: Finished difference Result 214 states and 360 transitions. [2019-08-05 10:06:03,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-08-05 10:06:03,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2019-08-05 10:06:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:03,761 INFO L225 Difference]: With dead ends: 214 [2019-08-05 10:06:03,762 INFO L226 Difference]: Without dead ends: 210 [2019-08-05 10:06:03,765 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2019-08-05 10:06:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-08-05 10:06:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2019-08-05 10:06:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-08-05 10:06:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 275 transitions. [2019-08-05 10:06:03,781 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 275 transitions. Word has length 37 [2019-08-05 10:06:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:03,781 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 275 transitions. [2019-08-05 10:06:03,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-08-05 10:06:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 275 transitions. [2019-08-05 10:06:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-08-05 10:06:03,784 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:03,784 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:06:03,784 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 657422551, now seen corresponding path program 1 times [2019-08-05 10:06:03,786 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:03,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2019-08-05 10:06:03,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:04,794 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-08-05 10:06:07,132 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 10:06:07,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:06:07,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-08-05 10:06:07,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-08-05 10:06:07,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-08-05 10:06:07,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=283, Unknown=1, NotChecked=0, Total=342 [2019-08-05 10:06:07,135 INFO L87 Difference]: Start difference. First operand 156 states and 275 transitions. Second operand 19 states. [2019-08-05 10:06:14,595 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-08-05 10:06:17,989 WARN L188 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-08-05 10:06:18,658 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-08-05 10:06:20,530 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-08-05 10:06:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:22,514 INFO L93 Difference]: Finished difference Result 491 states and 818 transitions. [2019-08-05 10:06:22,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-08-05 10:06:22,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2019-08-05 10:06:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:22,520 INFO L225 Difference]: With dead ends: 491 [2019-08-05 10:06:22,520 INFO L226 Difference]: Without dead ends: 471 [2019-08-05 10:06:22,522 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=492, Invalid=2159, Unknown=1, NotChecked=0, Total=2652 [2019-08-05 10:06:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-08-05 10:06:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 292. [2019-08-05 10:06:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-08-05 10:06:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 513 transitions. [2019-08-05 10:06:22,548 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 513 transitions. Word has length 38 [2019-08-05 10:06:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:22,548 INFO L475 AbstractCegarLoop]: Abstraction has 292 states and 513 transitions. [2019-08-05 10:06:22,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-08-05 10:06:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 513 transitions. [2019-08-05 10:06:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-08-05 10:06:22,552 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:22,552 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:06:22,553 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -555702943, now seen corresponding path program 1 times [2019-08-05 10:06:22,554 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:22,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2019-08-05 10:06:22,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:23,324 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:23,325 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:06:23,897 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-08-05 10:06:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:06:23,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:06:23,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-08-05 10:06:23,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-08-05 10:06:23,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-08-05 10:06:23,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-08-05 10:06:23,994 INFO L87 Difference]: Start difference. First operand 292 states and 513 transitions. Second operand 16 states. [2019-08-05 10:06:29,130 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-08-05 10:06:30,815 WARN L188 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-08-05 10:06:31,345 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-08-05 10:06:32,704 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-08-05 10:06:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:33,550 INFO L93 Difference]: Finished difference Result 456 states and 757 transitions. [2019-08-05 10:06:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-08-05 10:06:33,551 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2019-08-05 10:06:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:33,555 INFO L225 Difference]: With dead ends: 456 [2019-08-05 10:06:33,555 INFO L226 Difference]: Without dead ends: 454 [2019-08-05 10:06:33,556 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=410, Invalid=1570, Unknown=0, NotChecked=0, Total=1980 [2019-08-05 10:06:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-08-05 10:06:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 310. [2019-08-05 10:06:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2019-08-05 10:06:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 541 transitions. [2019-08-05 10:06:33,574 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 541 transitions. Word has length 39 [2019-08-05 10:06:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:33,574 INFO L475 AbstractCegarLoop]: Abstraction has 310 states and 541 transitions. [2019-08-05 10:06:33,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-08-05 10:06:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 541 transitions. [2019-08-05 10:06:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-08-05 10:06:33,578 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:33,578 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:06:33,578 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash 899942067, now seen corresponding path program 1 times [2019-08-05 10:06:33,580 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:33,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-05 10:06:33,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:06:34,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:06:34,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-08-05 10:06:34,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-08-05 10:06:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-08-05 10:06:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-08-05 10:06:34,039 INFO L87 Difference]: Start difference. First operand 310 states and 541 transitions. Second operand 13 states. [2019-08-05 10:06:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:06:40,761 INFO L93 Difference]: Finished difference Result 567 states and 932 transitions. [2019-08-05 10:06:40,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-08-05 10:06:40,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2019-08-05 10:06:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:06:40,767 INFO L225 Difference]: With dead ends: 567 [2019-08-05 10:06:40,767 INFO L226 Difference]: Without dead ends: 567 [2019-08-05 10:06:40,768 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2019-08-05 10:06:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-08-05 10:06:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 380. [2019-08-05 10:06:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-08-05 10:06:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 665 transitions. [2019-08-05 10:06:40,782 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 665 transitions. Word has length 39 [2019-08-05 10:06:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:06:40,782 INFO L475 AbstractCegarLoop]: Abstraction has 380 states and 665 transitions. [2019-08-05 10:06:40,783 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-08-05 10:06:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 665 transitions. [2019-08-05 10:06:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-08-05 10:06:40,786 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:06:40,786 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:06:40,787 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT, mainErr1ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:06:40,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:06:40,787 INFO L82 PathProgramCache]: Analyzing trace with hash 822647868, now seen corresponding path program 1 times [2019-08-05 10:06:40,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:06:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:06:40,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 31 conjunts are in the unsatisfiable core [2019-08-05 10:06:40,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:06:42,661 WARN L188 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-08-05 10:06:42,941 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-08-05 10:07:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:07:02,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:07:02,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-08-05 10:07:02,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-08-05 10:07:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-08-05 10:07:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=356, Unknown=2, NotChecked=0, Total=420 [2019-08-05 10:07:02,711 INFO L87 Difference]: Start difference. First operand 380 states and 665 transitions. Second operand 21 states. [2019-08-05 10:07:35,514 WARN L193 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) stderr output: (error "out of memory") [2019-08-05 10:07:35,515 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:122) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:660) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:264) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:712) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:625) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:467) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream Closed at java.io.FileOutputStream.writeBytes(Native Method) at java.io.FileOutputStream.write(FileOutputStream.java:326) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:119) ... 28 more [2019-08-05 10:07:35,523 INFO L168 Benchmark]: Toolchain (without parser) took 102995.92 ms. Allocated memory was 141.0 MB in the beginning and 365.4 MB in the end (delta: 224.4 MB). Free memory was 108.9 MB in the beginning and 101.2 MB in the end (delta: 7.6 MB). Peak memory consumption was 232.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,525 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 112.6 MB in the beginning and 112.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.65 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 106.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,528 INFO L168 Benchmark]: Boogie Preprocessor took 109.88 ms. Allocated memory is still 141.0 MB. Free memory was 106.7 MB in the beginning and 103.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,529 INFO L168 Benchmark]: RCFGBuilder took 4186.23 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 173.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,530 INFO L168 Benchmark]: TraceAbstraction took 98638.20 ms. Allocated memory was 203.9 MB in the beginning and 365.4 MB in the end (delta: 161.5 MB). Free memory was 172.3 MB in the beginning and 101.2 MB in the end (delta: 71.1 MB). Peak memory consumption was 232.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:07:35,535 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 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 112.6 MB in the beginning and 112.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.65 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 106.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.88 ms. Allocated memory is still 141.0 MB. Free memory was 106.7 MB in the beginning and 103.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4186.23 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 173.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 98638.20 ms. Allocated memory was 203.9 MB in the beginning and 365.4 MB in the end (delta: 161.5 MB). Free memory was 172.3 MB in the beginning and 101.2 MB in the end (delta: 71.1 MB). Peak memory consumption was 232.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:122) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...