java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:57:35,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:57:35,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:57:35,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-30 10:57:35,244 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 10:57:35,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:57:35,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:57:35,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:57:35,264 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:57:35,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:57:35,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:57:35,265 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:57:35,266 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:57:35,266 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:57:35,266 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:57:35,266 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:57:35,267 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:57:35,267 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:57:35,267 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:57:35,267 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:57:35,267 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:57:35,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:57:35,268 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:57:35,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:57:35,268 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:57:35,268 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:57:35,268 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:57:35,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:57:35,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:57:35,269 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:57:35,269 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:57:35,270 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:57:35,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:57:35,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:57:35,271 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:57:35,271 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:57:35,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:57:35,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:57:35,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:57:35,339 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:57:35,340 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:57:35,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl [2018-09-30 10:57:35,341 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl' [2018-09-30 10:57:35,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:57:35,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:57:35,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:57:35,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:57:35,396 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:57:35,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,436 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:57:35,436 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:57:35,436 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:57:35,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:57:35,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:57:35,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:57:35,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:57:35,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/1) ... [2018-09-30 10:57:35,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:57:35,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:57:35,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:57:35,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:57:35,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:57:35,521 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 10:57:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 10:57:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 10:57:35,778 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:57:35,779 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:57:35 BoogieIcfgContainer [2018-09-30 10:57:35,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:57:35,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:57:35,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:57:35,784 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:57:35,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:35" (1/2) ... [2018-09-30 10:57:35,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f26b6b7 and model type HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:57:35, skipping insertion in model container [2018-09-30 10:57:35,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:57:35" (2/2) ... [2018-09-30 10:57:35,787 INFO L112 eAbstractionObserver]: Analyzing ICFG HiddenEqualityWithBranches.bpl [2018-09-30 10:57:35,798 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:57:35,812 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:57:35,862 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:57:35,863 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:57:35,863 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:57:35,863 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:57:35,863 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:57:35,863 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:57:35,863 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:57:35,863 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:57:35,864 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:57:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-30 10:57:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-09-30 10:57:35,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:35,885 INFO L375 BasicCegarLoop]: trace histogram [1, 1] [2018-09-30 10:57:35,886 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:35,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash 979, now seen corresponding path program 1 times [2018-09-30 10:57:35,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:35,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:35,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:35,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:35,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:36,068 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:57:36,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-30 10:57:36,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:57:36,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:57:36,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:36,087 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-30 10:57:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:36,319 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-09-30 10:57:36,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:57:36,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-09-30 10:57:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:36,332 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:57:36,333 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 10:57:36,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 10:57:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 10:57:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 10:57:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-09-30 10:57:36,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 2 [2018-09-30 10:57:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:36,370 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-09-30 10:57:36,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:57:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2018-09-30 10:57:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 10:57:36,371 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:36,371 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-30 10:57:36,372 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:36,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash 28757385, now seen corresponding path program 1 times [2018-09-30 10:57:36,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:36,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:36,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:36,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:36,420 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:57:36,421 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:57:36,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:57:36,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:57:36,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:36,423 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 3 states. [2018-09-30 10:57:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:36,460 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2018-09-30 10:57:36,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:57:36,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-09-30 10:57:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:36,461 INFO L225 Difference]: With dead ends: 12 [2018-09-30 10:57:36,461 INFO L226 Difference]: Without dead ends: 8 [2018-09-30 10:57:36,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-30 10:57:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-30 10:57:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-30 10:57:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-09-30 10:57:36,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2018-09-30 10:57:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:36,468 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-09-30 10:57:36,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:57:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-09-30 10:57:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 10:57:36,469 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:36,469 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-30 10:57:36,469 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:36,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:36,470 INFO L82 PathProgramCache]: Analyzing trace with hash 28757447, now seen corresponding path program 1 times [2018-09-30 10:57:36,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:36,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:36,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:36,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:36,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:36,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:36,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:36,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:36,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:36,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2018-09-30 10:57:36,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:57:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:57:36,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:36,737 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2018-09-30 10:57:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:36,927 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2018-09-30 10:57:36,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:57:36,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-09-30 10:57:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:36,929 INFO L225 Difference]: With dead ends: 14 [2018-09-30 10:57:36,929 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:57:36,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:57:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:57:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:57:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-09-30 10:57:36,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2018-09-30 10:57:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:36,935 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-09-30 10:57:36,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:57:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-09-30 10:57:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:57:36,936 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:36,936 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2018-09-30 10:57:36,936 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:36,938 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203669, now seen corresponding path program 1 times [2018-09-30 10:57:36,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:36,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:36,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:36,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:36,990 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:36,990 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:36,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:37,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:37,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:57:37,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:57:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:57:37,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:37,234 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-09-30 10:57:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:37,369 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-09-30 10:57:37,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:57:37,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-09-30 10:57:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:37,372 INFO L225 Difference]: With dead ends: 15 [2018-09-30 10:57:37,372 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 10:57:37,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 10:57:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 10:57:37,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:57:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-09-30 10:57:37,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-09-30 10:57:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:37,377 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-09-30 10:57:37,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:57:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-09-30 10:57:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:57:37,377 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:37,378 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1] [2018-09-30 10:57:37,378 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:37,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203731, now seen corresponding path program 2 times [2018-09-30 10:57:37,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:37,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:37,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:37,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,426 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:37,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:37,438 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:37,446 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:37,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:37,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:37,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:57:37,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:57:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:57:37,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:37,512 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 5 states. [2018-09-30 10:57:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:37,683 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-09-30 10:57:37,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:57:37,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-30 10:57:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:37,684 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:57:37,684 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:57:37,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:57:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-30 10:57:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-30 10:57:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-09-30 10:57:37,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-09-30 10:57:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:37,689 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-09-30 10:57:37,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:57:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-09-30 10:57:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:57:37,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:37,690 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1] [2018-09-30 10:57:37,690 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:37,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash 154849801, now seen corresponding path program 2 times [2018-09-30 10:57:37,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:37,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:37,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:37,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:37,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:37,758 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:37,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:37,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:37,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,823 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:37,823 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:57:37,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:57:37,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:57:37,824 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:37,824 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2018-09-30 10:57:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:37,883 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-09-30 10:57:37,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:57:37,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-30 10:57:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:37,885 INFO L225 Difference]: With dead ends: 18 [2018-09-30 10:57:37,885 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 10:57:37,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 10:57:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 10:57:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:57:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 10:57:37,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-09-30 10:57:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:37,889 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 10:57:37,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:57:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 10:57:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:57:37,890 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:37,890 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1] [2018-09-30 10:57:37,890 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:37,891 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash 154849863, now seen corresponding path program 3 times [2018-09-30 10:57:37,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:37,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:37,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:37,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:37,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:37,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:37,981 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:37,989 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 10:57:37,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:37,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:38,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:38,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:57:38,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:57:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:57:38,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:38,130 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-09-30 10:57:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:38,539 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-09-30 10:57:38,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:57:38,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-09-30 10:57:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:38,541 INFO L225 Difference]: With dead ends: 20 [2018-09-30 10:57:38,541 INFO L226 Difference]: Without dead ends: 16 [2018-09-30 10:57:38,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-30 10:57:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-30 10:57:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-30 10:57:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-09-30 10:57:38,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2018-09-30 10:57:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:38,545 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-09-30 10:57:38,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:57:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-09-30 10:57:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:57:38,546 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:38,546 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1] [2018-09-30 10:57:38,547 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:38,547 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash 336984725, now seen corresponding path program 3 times [2018-09-30 10:57:38,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:38,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:38,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:38,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:38,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:38,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:38,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:38,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:38,631 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-09-30 10:57:38,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:38,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:38,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:38,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-09-30 10:57:38,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:57:38,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:57:38,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:38,763 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 11 states. [2018-09-30 10:57:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:39,153 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-09-30 10:57:39,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:57:39,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-09-30 10:57:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:39,154 INFO L225 Difference]: With dead ends: 23 [2018-09-30 10:57:39,154 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:57:39,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:57:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 10:57:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:57:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-30 10:57:39,158 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-09-30 10:57:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:39,159 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-30 10:57:39,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:57:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-30 10:57:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:57:39,159 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:39,160 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2018-09-30 10:57:39,160 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:39,160 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:39,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810761, now seen corresponding path program 4 times [2018-09-30 10:57:39,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:39,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:39,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:39,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:39,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:39,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:39,239 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:57:39,260 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:57:39,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:39,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:39,425 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:39,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:57:39,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:57:39,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:57:39,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:39,426 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2018-09-30 10:57:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:39,598 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2018-09-30 10:57:39,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:57:39,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-09-30 10:57:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:39,600 INFO L225 Difference]: With dead ends: 24 [2018-09-30 10:57:39,600 INFO L226 Difference]: Without dead ends: 20 [2018-09-30 10:57:39,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-30 10:57:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-30 10:57:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-30 10:57:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-09-30 10:57:39,605 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-09-30 10:57:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:39,606 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-09-30 10:57:39,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:57:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-09-30 10:57:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:57:39,607 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:39,607 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1] [2018-09-30 10:57:39,607 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:39,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810823, now seen corresponding path program 4 times [2018-09-30 10:57:39,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:39,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:39,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:39,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:39,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:39,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:39,698 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:57:39,711 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:57:39,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:39,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:39,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:39,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:57:39,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:57:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:57:39,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:39,793 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-09-30 10:57:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:39,888 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2018-09-30 10:57:39,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:57:39,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-09-30 10:57:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:39,889 INFO L225 Difference]: With dead ends: 26 [2018-09-30 10:57:39,889 INFO L226 Difference]: Without dead ends: 22 [2018-09-30 10:57:39,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-30 10:57:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-30 10:57:39,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-30 10:57:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-09-30 10:57:39,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2018-09-30 10:57:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:39,896 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-09-30 10:57:39,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:57:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-09-30 10:57:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 10:57:39,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:39,897 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1] [2018-09-30 10:57:39,897 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:39,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561067, now seen corresponding path program 5 times [2018-09-30 10:57:39,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:39,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:39,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:39,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:39,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:39,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:39,971 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:39,983 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 10:57:39,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:39,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:40,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:40,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:57:40,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:57:40,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:57:40,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:40,074 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2018-09-30 10:57:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:40,152 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-09-30 10:57:40,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:57:40,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-09-30 10:57:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:40,154 INFO L225 Difference]: With dead ends: 27 [2018-09-30 10:57:40,155 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:57:40,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:57:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:57:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:57:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-09-30 10:57:40,159 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-09-30 10:57:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:40,160 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-09-30 10:57:40,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:57:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-09-30 10:57:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 10:57:40,161 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:40,161 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1] [2018-09-30 10:57:40,161 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:40,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:40,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561005, now seen corresponding path program 5 times [2018-09-30 10:57:40,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:40,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:40,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:40,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:40,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:40,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:40,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:40,311 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:40,338 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 10:57:40,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:40,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:40,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:40,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:57:40,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:57:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:57:40,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:40,423 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2018-09-30 10:57:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:40,526 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-09-30 10:57:40,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:57:40,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-09-30 10:57:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:40,527 INFO L225 Difference]: With dead ends: 29 [2018-09-30 10:57:40,528 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 10:57:40,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 10:57:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 10:57:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 10:57:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-30 10:57:40,533 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-09-30 10:57:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:40,533 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-30 10:57:40,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:57:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-30 10:57:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 10:57:40,534 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:40,534 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1] [2018-09-30 10:57:40,535 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:40,535 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1729447159, now seen corresponding path program 6 times [2018-09-30 10:57:40,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:40,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:40,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:40,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:40,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:40,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:40,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:40,627 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:40,639 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-30 10:57:40,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:40,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:40,774 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:40,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-09-30 10:57:40,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:57:40,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:57:40,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:40,775 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 17 states. [2018-09-30 10:57:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:41,405 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2018-09-30 10:57:41,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:57:41,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-09-30 10:57:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:41,406 INFO L225 Difference]: With dead ends: 32 [2018-09-30 10:57:41,406 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 10:57:41,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 10:57:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-30 10:57:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-30 10:57:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-09-30 10:57:41,412 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2018-09-30 10:57:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:41,412 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-09-30 10:57:41,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:57:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-09-30 10:57:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:57:41,413 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:41,413 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1] [2018-09-30 10:57:41,413 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:41,414 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:41,414 INFO L82 PathProgramCache]: Analyzing trace with hash 468808085, now seen corresponding path program 7 times [2018-09-30 10:57:41,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:41,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:41,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:41,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:41,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:41,476 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:41,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:41,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:41,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:41,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:41,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:57:41,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:57:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:57:41,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:41,590 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 10 states. [2018-09-30 10:57:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:41,696 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-09-30 10:57:41,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:57:41,697 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-09-30 10:57:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:41,698 INFO L225 Difference]: With dead ends: 33 [2018-09-30 10:57:41,698 INFO L226 Difference]: Without dead ends: 29 [2018-09-30 10:57:41,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-30 10:57:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-30 10:57:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 10:57:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-09-30 10:57:41,703 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-09-30 10:57:41,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:41,704 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-09-30 10:57:41,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:57:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-09-30 10:57:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:57:41,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:41,705 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1] [2018-09-30 10:57:41,705 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:41,706 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:41,706 INFO L82 PathProgramCache]: Analyzing trace with hash 468808147, now seen corresponding path program 6 times [2018-09-30 10:57:41,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:41,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:41,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:41,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:41,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:41,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:41,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:41,836 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:41,852 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-09-30 10:57:41,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:41,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:41,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:41,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:57:41,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:57:41,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:57:41,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:41,960 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 11 states. [2018-09-30 10:57:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:42,097 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-30 10:57:42,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:57:42,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-09-30 10:57:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:42,098 INFO L225 Difference]: With dead ends: 35 [2018-09-30 10:57:42,098 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 10:57:42,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 10:57:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 10:57:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 10:57:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-30 10:57:42,103 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 26 [2018-09-30 10:57:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:42,103 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-30 10:57:42,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:57:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-30 10:57:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 10:57:42,104 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:42,105 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1] [2018-09-30 10:57:42,105 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:42,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:42,105 INFO L82 PathProgramCache]: Analyzing trace with hash -970547319, now seen corresponding path program 8 times [2018-09-30 10:57:42,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:42,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:42,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:42,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:42,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:42,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:42,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:42,208 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:42,246 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:42,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:42,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:42,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:42,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:57:42,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:57:42,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:57:42,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:42,459 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2018-09-30 10:57:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:42,718 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-09-30 10:57:42,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:57:42,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-09-30 10:57:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:42,720 INFO L225 Difference]: With dead ends: 36 [2018-09-30 10:57:42,720 INFO L226 Difference]: Without dead ends: 32 [2018-09-30 10:57:42,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-30 10:57:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-30 10:57:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-30 10:57:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-09-30 10:57:42,725 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2018-09-30 10:57:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:42,725 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-09-30 10:57:42,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:57:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-09-30 10:57:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 10:57:42,726 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:42,727 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1] [2018-09-30 10:57:42,727 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:42,727 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:42,727 INFO L82 PathProgramCache]: Analyzing trace with hash -970547257, now seen corresponding path program 7 times [2018-09-30 10:57:42,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:42,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:42,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:42,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:42,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:42,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:42,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:42,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:42,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:42,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:42,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:57:42,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:57:42,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:57:42,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:42,957 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 12 states. [2018-09-30 10:57:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:43,060 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-09-30 10:57:43,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:57:43,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-09-30 10:57:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:43,061 INFO L225 Difference]: With dead ends: 38 [2018-09-30 10:57:43,061 INFO L226 Difference]: Without dead ends: 34 [2018-09-30 10:57:43,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-30 10:57:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-30 10:57:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 10:57:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-09-30 10:57:43,066 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2018-09-30 10:57:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:43,067 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-09-30 10:57:43,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:57:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-09-30 10:57:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-30 10:57:43,068 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:43,068 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1] [2018-09-30 10:57:43,068 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:43,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash 146095381, now seen corresponding path program 9 times [2018-09-30 10:57:43,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:43,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:43,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:43,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:43,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:43,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:43,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:43,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:43,313 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-30 10:57:43,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:43,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:43,606 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:43,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-09-30 10:57:43,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:57:43,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:57:43,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:43,607 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 23 states. [2018-09-30 10:57:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:44,294 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-09-30 10:57:44,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:57:44,294 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2018-09-30 10:57:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:44,295 INFO L225 Difference]: With dead ends: 41 [2018-09-30 10:57:44,295 INFO L226 Difference]: Without dead ends: 37 [2018-09-30 10:57:44,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-30 10:57:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-30 10:57:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 10:57:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-09-30 10:57:44,299 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 32 [2018-09-30 10:57:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:44,299 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-09-30 10:57:44,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:57:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-09-30 10:57:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-30 10:57:44,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:44,300 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2018-09-30 10:57:44,301 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:44,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:44,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1527063561, now seen corresponding path program 10 times [2018-09-30 10:57:44,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:44,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:44,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:44,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:44,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 11 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:44,465 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:44,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:44,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:57:44,490 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:57:44,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:44,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:44,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:44,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-09-30 10:57:44,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 10:57:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 10:57:44,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:44,646 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 25 states. [2018-09-30 10:57:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:45,231 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-09-30 10:57:45,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:57:45,232 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2018-09-30 10:57:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:45,232 INFO L225 Difference]: With dead ends: 44 [2018-09-30 10:57:45,232 INFO L226 Difference]: Without dead ends: 40 [2018-09-30 10:57:45,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-30 10:57:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-30 10:57:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-30 10:57:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-09-30 10:57:45,236 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2018-09-30 10:57:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:45,237 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-09-30 10:57:45,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 10:57:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-09-30 10:57:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:57:45,238 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:45,238 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1] [2018-09-30 10:57:45,238 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:45,238 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash 458385557, now seen corresponding path program 11 times [2018-09-30 10:57:45,238 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:45,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:45,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:45,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:45,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:45,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:45,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:45,360 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:45,439 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-30 10:57:45,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:45,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:45,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:45,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:57:45,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:57:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:57:45,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:45,558 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2018-09-30 10:57:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:45,683 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-09-30 10:57:45,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:57:45,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-09-30 10:57:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:45,684 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:57:45,685 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 10:57:45,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 10:57:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-30 10:57:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 10:57:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-09-30 10:57:45,690 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-09-30 10:57:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:45,690 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-09-30 10:57:45,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:57:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-09-30 10:57:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:57:45,691 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:45,691 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1] [2018-09-30 10:57:45,691 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:45,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 458385619, now seen corresponding path program 8 times [2018-09-30 10:57:45,692 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:45,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:45,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:45,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:45,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:46,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:46,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:46,079 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:46,094 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:46,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:46,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:46,222 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:46,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:57:46,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:57:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:57:46,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:46,223 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-09-30 10:57:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:46,353 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-09-30 10:57:46,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:57:46,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2018-09-30 10:57:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:46,355 INFO L225 Difference]: With dead ends: 47 [2018-09-30 10:57:46,355 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:57:46,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:57:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 10:57:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 10:57:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-09-30 10:57:46,360 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2018-09-30 10:57:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:46,360 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-09-30 10:57:46,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:57:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-09-30 10:57:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-30 10:57:46,361 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:46,361 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1] [2018-09-30 10:57:46,362 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:46,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2064533641, now seen corresponding path program 12 times [2018-09-30 10:57:46,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:46,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:46,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:46,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:46,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:46,909 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:46,929 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-09-30 10:57:46,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:46,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:47,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:47,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-09-30 10:57:47,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:57:47,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:57:47,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:47,679 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 29 states. [2018-09-30 10:57:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:48,813 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-09-30 10:57:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:57:48,815 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 41 [2018-09-30 10:57:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:48,816 INFO L225 Difference]: With dead ends: 50 [2018-09-30 10:57:48,816 INFO L226 Difference]: Without dead ends: 46 [2018-09-30 10:57:48,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-30 10:57:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-30 10:57:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-30 10:57:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-09-30 10:57:48,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2018-09-30 10:57:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:48,821 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-09-30 10:57:48,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:57:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-09-30 10:57:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 10:57:48,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:48,822 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1] [2018-09-30 10:57:48,822 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:48,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:48,823 INFO L82 PathProgramCache]: Analyzing trace with hash 591459349, now seen corresponding path program 13 times [2018-09-30 10:57:48,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:48,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:48,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:48,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:48,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:49,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:49,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:49,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:49,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:49,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:49,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:57:49,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:57:49,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:57:49,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:49,317 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2018-09-30 10:57:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:49,441 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-09-30 10:57:49,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:57:49,442 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2018-09-30 10:57:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:49,443 INFO L225 Difference]: With dead ends: 51 [2018-09-30 10:57:49,443 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 10:57:49,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 10:57:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 10:57:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 10:57:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-09-30 10:57:49,449 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-09-30 10:57:49,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:49,450 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-09-30 10:57:49,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:57:49,450 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-09-30 10:57:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-30 10:57:49,451 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:49,451 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1] [2018-09-30 10:57:49,451 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:49,452 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash 591459411, now seen corresponding path program 9 times [2018-09-30 10:57:49,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:49,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:49,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:49,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:49,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:49,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:49,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:49,779 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:49,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-09-30 10:57:49,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:49,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:50,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:50,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:57:50,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:57:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:57:50,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:50,009 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 17 states. [2018-09-30 10:57:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:50,118 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-09-30 10:57:50,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:57:50,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-09-30 10:57:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:50,119 INFO L225 Difference]: With dead ends: 53 [2018-09-30 10:57:50,120 INFO L226 Difference]: Without dead ends: 49 [2018-09-30 10:57:50,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-30 10:57:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-30 10:57:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 10:57:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-09-30 10:57:50,124 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2018-09-30 10:57:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:50,124 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-09-30 10:57:50,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:57:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-09-30 10:57:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-30 10:57:50,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:50,125 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1] [2018-09-30 10:57:50,126 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:50,126 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910391, now seen corresponding path program 14 times [2018-09-30 10:57:50,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:50,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:50,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:50,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:50,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:50,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:50,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:50,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:50,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:50,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:50,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:50,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:50,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:57:50,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:57:50,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:57:50,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:50,393 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 17 states. [2018-09-30 10:57:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:50,533 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-09-30 10:57:50,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:57:50,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2018-09-30 10:57:50,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:50,534 INFO L225 Difference]: With dead ends: 54 [2018-09-30 10:57:50,534 INFO L226 Difference]: Without dead ends: 50 [2018-09-30 10:57:50,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-30 10:57:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-30 10:57:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-30 10:57:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-09-30 10:57:50,538 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2018-09-30 10:57:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:50,539 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-09-30 10:57:50,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:57:50,539 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-09-30 10:57:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-30 10:57:50,539 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:50,539 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1] [2018-09-30 10:57:50,540 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:50,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:50,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910329, now seen corresponding path program 10 times [2018-09-30 10:57:50,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:50,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:50,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:50,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:50,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:50,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:50,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:50,676 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:57:50,691 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:57:50,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:50,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:50,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:50,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:57:50,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:57:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:57:50,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:50,829 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 18 states. [2018-09-30 10:57:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:50,994 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-09-30 10:57:50,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:57:50,994 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2018-09-30 10:57:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:50,995 INFO L225 Difference]: With dead ends: 56 [2018-09-30 10:57:50,995 INFO L226 Difference]: Without dead ends: 52 [2018-09-30 10:57:50,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-30 10:57:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-30 10:57:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-30 10:57:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-09-30 10:57:50,999 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 47 [2018-09-30 10:57:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:50,999 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-09-30 10:57:50,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:57:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-09-30 10:57:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 10:57:51,000 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:51,000 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1] [2018-09-30 10:57:51,001 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:51,001 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1979244437, now seen corresponding path program 15 times [2018-09-30 10:57:51,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:51,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:51,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:51,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:51,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 16 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:51,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:51,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:51,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:51,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-09-30 10:57:51,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:51,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:51,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:51,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-09-30 10:57:51,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:57:51,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:57:51,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:51,915 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 35 states. [2018-09-30 10:57:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:52,807 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-09-30 10:57:52,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:57:52,808 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2018-09-30 10:57:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:52,808 INFO L225 Difference]: With dead ends: 59 [2018-09-30 10:57:52,808 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 10:57:52,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 10:57:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 10:57:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 10:57:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-09-30 10:57:52,812 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 50 [2018-09-30 10:57:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:52,812 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-09-30 10:57:52,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:57:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-09-30 10:57:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 10:57:52,813 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:52,813 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1] [2018-09-30 10:57:52,813 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:52,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:52,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545079, now seen corresponding path program 16 times [2018-09-30 10:57:52,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:52,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:52,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:52,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:52,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:52,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:52,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:52,939 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:57:52,958 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:57:52,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:52,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:53,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:53,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:57:53,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:57:53,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:57:53,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:53,099 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 19 states. [2018-09-30 10:57:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:53,232 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-09-30 10:57:53,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:57:53,233 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2018-09-30 10:57:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:53,234 INFO L225 Difference]: With dead ends: 60 [2018-09-30 10:57:53,234 INFO L226 Difference]: Without dead ends: 56 [2018-09-30 10:57:53,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-30 10:57:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-30 10:57:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-30 10:57:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-09-30 10:57:53,238 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2018-09-30 10:57:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:53,239 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-09-30 10:57:53,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:57:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-09-30 10:57:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 10:57:53,239 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:53,239 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1] [2018-09-30 10:57:53,240 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:53,240 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:53,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545017, now seen corresponding path program 11 times [2018-09-30 10:57:53,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:53,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:53,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:53,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:53,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:53,523 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:53,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:53,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:53,561 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 10:57:53,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:53,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:53,789 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:53,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:57:53,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:57:53,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:57:53,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:53,790 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 20 states. [2018-09-30 10:57:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:53,991 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-09-30 10:57:53,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:57:53,992 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-09-30 10:57:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:53,993 INFO L225 Difference]: With dead ends: 62 [2018-09-30 10:57:53,993 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 10:57:53,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 10:57:53,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-30 10:57:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-30 10:57:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-09-30 10:57:53,996 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2018-09-30 10:57:53,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:53,997 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-09-30 10:57:53,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:57:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-09-30 10:57:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 10:57:53,998 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:53,998 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1] [2018-09-30 10:57:53,998 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:53,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:53,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364501, now seen corresponding path program 17 times [2018-09-30 10:57:53,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:53,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:53,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:53,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:53,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:54,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:54,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:54,206 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:54,256 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-30 10:57:54,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:54,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:54,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:54,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:57:54,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:57:54,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:57:54,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:54,397 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 20 states. [2018-09-30 10:57:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:54,530 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-09-30 10:57:54,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:57:54,530 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2018-09-30 10:57:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:54,531 INFO L225 Difference]: With dead ends: 63 [2018-09-30 10:57:54,531 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 10:57:54,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 10:57:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 10:57:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:57:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-09-30 10:57:54,535 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-09-30 10:57:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:54,535 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-09-30 10:57:54,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:57:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-09-30 10:57:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-30 10:57:54,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:54,536 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1] [2018-09-30 10:57:54,536 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:54,536 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364563, now seen corresponding path program 12 times [2018-09-30 10:57:54,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:54,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:54,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:54,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:54,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:54,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:54,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:54,666 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:54,695 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:57:54,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:54,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:54,970 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:54,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:57:54,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 10:57:54,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 10:57:54,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:54,971 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 21 states. [2018-09-30 10:57:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:55,129 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2018-09-30 10:57:55,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:57:55,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2018-09-30 10:57:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:55,130 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:57:55,130 INFO L226 Difference]: Without dead ends: 61 [2018-09-30 10:57:55,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-30 10:57:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-30 10:57:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-30 10:57:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-09-30 10:57:55,134 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 56 [2018-09-30 10:57:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:55,134 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-09-30 10:57:55,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 10:57:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-09-30 10:57:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-30 10:57:55,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:55,135 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1] [2018-09-30 10:57:55,135 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:55,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:55,135 INFO L82 PathProgramCache]: Analyzing trace with hash -411470327, now seen corresponding path program 18 times [2018-09-30 10:57:55,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:55,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:55,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:55,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:55,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 19 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:55,537 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:55,537 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:55,544 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:55,571 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-09-30 10:57:55,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:55,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:55,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:55,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-09-30 10:57:55,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:57:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:57:55,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:55,787 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 41 states. [2018-09-30 10:57:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:57,801 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2018-09-30 10:57:57,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:57:57,801 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 59 [2018-09-30 10:57:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:57,802 INFO L225 Difference]: With dead ends: 68 [2018-09-30 10:57:57,802 INFO L226 Difference]: Without dead ends: 64 [2018-09-30 10:57:57,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-30 10:57:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-30 10:57:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 10:57:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2018-09-30 10:57:57,805 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 59 [2018-09-30 10:57:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:57,805 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2018-09-30 10:57:57,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:57:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2018-09-30 10:57:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:57:57,806 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:57,806 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1] [2018-09-30 10:57:57,806 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:57,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash -274409835, now seen corresponding path program 19 times [2018-09-30 10:57:57,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:57,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:57,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:57,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:57,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:58,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:58,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:58,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:58,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:58,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:58,174 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:57:58,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:57:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:57:58,175 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:58,175 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 22 states. [2018-09-30 10:57:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:58,351 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-09-30 10:57:58,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:57:58,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2018-09-30 10:57:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:58,352 INFO L225 Difference]: With dead ends: 69 [2018-09-30 10:57:58,352 INFO L226 Difference]: Without dead ends: 65 [2018-09-30 10:57:58,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-30 10:57:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-30 10:57:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-30 10:57:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-09-30 10:57:58,356 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-09-30 10:57:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:58,356 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-09-30 10:57:58,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:57:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-09-30 10:57:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:57:58,357 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:58,357 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1] [2018-09-30 10:57:58,357 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:58,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash -274409773, now seen corresponding path program 13 times [2018-09-30 10:57:58,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:58,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:58,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:58,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:58,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:58,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:58,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:58,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:58,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:58,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:58,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:57:58,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:57:58,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:57:58,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:58,826 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 23 states. [2018-09-30 10:57:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:59,002 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-09-30 10:57:59,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:57:59,002 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2018-09-30 10:57:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:59,003 INFO L225 Difference]: With dead ends: 71 [2018-09-30 10:57:59,004 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 10:57:59,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 10:57:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 10:57:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 10:57:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-09-30 10:57:59,007 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 62 [2018-09-30 10:57:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:59,008 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-09-30 10:57:59,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:57:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-09-30 10:57:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-30 10:57:59,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:59,009 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1] [2018-09-30 10:57:59,009 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:59,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191159, now seen corresponding path program 20 times [2018-09-30 10:57:59,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:59,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:59,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:59,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:59,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:59,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:59,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:59,273 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:59,293 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:59,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:59,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:59,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:59,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:57:59,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:57:59,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:57:59,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:59,432 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 23 states. [2018-09-30 10:57:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:59,604 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-09-30 10:57:59,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:57:59,605 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2018-09-30 10:57:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:59,606 INFO L225 Difference]: With dead ends: 72 [2018-09-30 10:57:59,606 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 10:57:59,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 10:57:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-09-30 10:57:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-30 10:57:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2018-09-30 10:57:59,610 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2018-09-30 10:57:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:59,611 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2018-09-30 10:57:59,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:57:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2018-09-30 10:57:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-30 10:57:59,611 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:59,612 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1] [2018-09-30 10:57:59,612 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:59,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:59,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191097, now seen corresponding path program 14 times [2018-09-30 10:57:59,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:59,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:59,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:59,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:59,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:59,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:59,728 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:59,735 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:59,755 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:59,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:59,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:59,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:59,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:57:59,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:57:59,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:57:59,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:59,890 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 24 states. [2018-09-30 10:57:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:59,987 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2018-09-30 10:57:59,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:57:59,988 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2018-09-30 10:57:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:59,989 INFO L225 Difference]: With dead ends: 74 [2018-09-30 10:57:59,989 INFO L226 Difference]: Without dead ends: 70 [2018-09-30 10:57:59,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-30 10:57:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-09-30 10:57:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-30 10:57:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-09-30 10:57:59,993 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2018-09-30 10:57:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:59,993 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-09-30 10:57:59,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:57:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-09-30 10:57:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 10:57:59,994 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:59,994 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1] [2018-09-30 10:57:59,994 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:59,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash -544677355, now seen corresponding path program 21 times [2018-09-30 10:57:59,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:59,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:59,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:59,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:59,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 22 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:00,175 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:00,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:00,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:00,217 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-09-30 10:58:00,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:00,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:00,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:00,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-09-30 10:58:00,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:58:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:58:00,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:00,483 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 47 states. [2018-09-30 10:58:01,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:01,892 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2018-09-30 10:58:01,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:58:01,892 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 68 [2018-09-30 10:58:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:01,893 INFO L225 Difference]: With dead ends: 77 [2018-09-30 10:58:01,893 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 10:58:01,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 10:58:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-30 10:58:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 10:58:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-09-30 10:58:01,896 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 68 [2018-09-30 10:58:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:01,896 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-09-30 10:58:01,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:58:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-09-30 10:58:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-30 10:58:01,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:01,897 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1] [2018-09-30 10:58:01,897 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:01,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:01,897 INFO L82 PathProgramCache]: Analyzing trace with hash -95199479, now seen corresponding path program 22 times [2018-09-30 10:58:01,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:01,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:01,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:01,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:01,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 23 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:02,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:02,663 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:02,688 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:02,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:02,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:02,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-09-30 10:58:02,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:58:02,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:58:02,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:02,939 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 49 states. [2018-09-30 10:58:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:05,063 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2018-09-30 10:58:05,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:58:05,063 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 71 [2018-09-30 10:58:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:05,064 INFO L225 Difference]: With dead ends: 80 [2018-09-30 10:58:05,064 INFO L226 Difference]: Without dead ends: 76 [2018-09-30 10:58:05,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-30 10:58:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-30 10:58:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-30 10:58:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-09-30 10:58:05,067 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 71 [2018-09-30 10:58:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:05,067 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-09-30 10:58:05,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:58:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-09-30 10:58:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:58:05,067 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:05,067 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1] [2018-09-30 10:58:05,068 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:05,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824491, now seen corresponding path program 23 times [2018-09-30 10:58:05,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:05,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:05,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:05,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:05,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:05,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:05,277 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-30 10:58:05,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:05,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:05,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:58:05,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 10:58:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 10:58:05,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:05,442 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 26 states. [2018-09-30 10:58:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:05,648 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-09-30 10:58:05,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:58:05,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2018-09-30 10:58:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:05,650 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:58:05,650 INFO L226 Difference]: Without dead ends: 77 [2018-09-30 10:58:05,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-30 10:58:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-30 10:58:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 10:58:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-09-30 10:58:05,653 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-09-30 10:58:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:05,653 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-09-30 10:58:05,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 10:58:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-09-30 10:58:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:58:05,654 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:05,654 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1] [2018-09-30 10:58:05,654 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:05,654 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:05,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824429, now seen corresponding path program 15 times [2018-09-30 10:58:05,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:05,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:05,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:05,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:05,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:05,829 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:05,869 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-09-30 10:58:05,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:05,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:06,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:58:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 10:58:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 10:58:06,055 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:06,055 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 27 states. [2018-09-30 10:58:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:06,280 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2018-09-30 10:58:06,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:58:06,281 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 74 [2018-09-30 10:58:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:06,282 INFO L225 Difference]: With dead ends: 83 [2018-09-30 10:58:06,282 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:58:06,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:58:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 10:58:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:58:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-09-30 10:58:06,286 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 74 [2018-09-30 10:58:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:06,286 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-09-30 10:58:06,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 10:58:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-09-30 10:58:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-30 10:58:06,287 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:06,287 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1] [2018-09-30 10:58:06,287 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:06,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:06,287 INFO L82 PathProgramCache]: Analyzing trace with hash -142326903, now seen corresponding path program 24 times [2018-09-30 10:58:06,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:06,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:06,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:06,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 25 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:06,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:06,516 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:06,559 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-09-30 10:58:06,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:06,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:06,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-09-30 10:58:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:58:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:58:06,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:06,844 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 53 states. [2018-09-30 10:58:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:09,067 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2018-09-30 10:58:09,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:58:09,067 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 77 [2018-09-30 10:58:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:09,067 INFO L225 Difference]: With dead ends: 86 [2018-09-30 10:58:09,068 INFO L226 Difference]: Without dead ends: 82 [2018-09-30 10:58:09,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-30 10:58:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-30 10:58:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-30 10:58:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-09-30 10:58:09,071 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 77 [2018-09-30 10:58:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:09,071 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-09-30 10:58:09,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:58:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-09-30 10:58:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 10:58:09,071 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:09,072 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1] [2018-09-30 10:58:09,072 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:09,072 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:09,072 INFO L82 PathProgramCache]: Analyzing trace with hash -926607083, now seen corresponding path program 25 times [2018-09-30 10:58:09,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:09,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:09,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:09,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:09,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:09,261 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:09,261 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:09,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:09,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:09,471 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:09,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:58:09,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:58:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:58:09,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:09,472 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 28 states. [2018-09-30 10:58:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:09,715 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-09-30 10:58:09,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 10:58:09,715 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2018-09-30 10:58:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:09,717 INFO L225 Difference]: With dead ends: 87 [2018-09-30 10:58:09,717 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:58:09,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:58:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 10:58:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 10:58:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-09-30 10:58:09,721 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-09-30 10:58:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:09,722 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-09-30 10:58:09,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:58:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-09-30 10:58:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-30 10:58:09,722 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:09,722 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1] [2018-09-30 10:58:09,723 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:09,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:09,723 INFO L82 PathProgramCache]: Analyzing trace with hash -926607021, now seen corresponding path program 16 times [2018-09-30 10:58:09,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:09,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:09,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:09,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:09,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:09,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:09,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:09,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:09,965 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:09,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:09,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:10,103 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:10,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:58:10,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:58:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:58:10,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:10,104 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 29 states. [2018-09-30 10:58:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:10,263 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-09-30 10:58:10,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:58:10,264 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2018-09-30 10:58:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:10,265 INFO L225 Difference]: With dead ends: 89 [2018-09-30 10:58:10,265 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 10:58:10,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 10:58:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 10:58:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 10:58:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-09-30 10:58:10,269 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2018-09-30 10:58:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:10,269 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-09-30 10:58:10,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:58:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-09-30 10:58:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 10:58:10,270 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:10,270 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1] [2018-09-30 10:58:10,270 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:10,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash -795359223, now seen corresponding path program 26 times [2018-09-30 10:58:10,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:10,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:10,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:10,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:10,482 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:10,482 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:10,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:10,514 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:10,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:10,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:10,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:10,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:58:10,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:58:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:58:10,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:10,652 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 29 states. [2018-09-30 10:58:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:10,892 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2018-09-30 10:58:10,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:58:10,892 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2018-09-30 10:58:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:10,893 INFO L225 Difference]: With dead ends: 90 [2018-09-30 10:58:10,894 INFO L226 Difference]: Without dead ends: 86 [2018-09-30 10:58:10,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-30 10:58:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-09-30 10:58:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-30 10:58:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-09-30 10:58:10,897 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2018-09-30 10:58:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:10,897 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-09-30 10:58:10,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:58:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-09-30 10:58:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 10:58:10,898 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:10,898 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1] [2018-09-30 10:58:10,898 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:10,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:10,898 INFO L82 PathProgramCache]: Analyzing trace with hash -795359161, now seen corresponding path program 17 times [2018-09-30 10:58:10,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:10,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:10,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:10,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:11,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:11,284 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:11,326 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-09-30 10:58:11,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:11,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:11,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:58:11,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 10:58:11,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 10:58:11,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:11,531 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 30 states. [2018-09-30 10:58:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:11,759 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-09-30 10:58:11,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 10:58:11,759 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 83 [2018-09-30 10:58:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:11,760 INFO L225 Difference]: With dead ends: 92 [2018-09-30 10:58:11,760 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 10:58:11,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 10:58:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-30 10:58:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-30 10:58:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-09-30 10:58:11,764 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 83 [2018-09-30 10:58:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:11,764 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-09-30 10:58:11,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 10:58:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-09-30 10:58:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 10:58:11,764 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:11,765 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1] [2018-09-30 10:58:11,765 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:11,765 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 789398677, now seen corresponding path program 27 times [2018-09-30 10:58:11,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:11,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:11,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:11,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:11,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 28 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:11,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:11,964 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:12,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-09-30 10:58:12,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:12,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:12,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:12,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-09-30 10:58:12,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 10:58:12,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 10:58:12,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:12,329 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 59 states. [2018-09-30 10:58:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:14,900 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-09-30 10:58:14,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:58:14,900 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 86 [2018-09-30 10:58:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:14,901 INFO L225 Difference]: With dead ends: 95 [2018-09-30 10:58:14,901 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 10:58:14,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 10:58:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 10:58:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 10:58:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-09-30 10:58:14,903 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2018-09-30 10:58:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:14,903 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-09-30 10:58:14,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 10:58:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-09-30 10:58:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-30 10:58:14,904 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:14,904 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1] [2018-09-30 10:58:14,904 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:14,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:14,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2031479945, now seen corresponding path program 28 times [2018-09-30 10:58:14,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:14,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:14,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:14,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:14,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:15,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:15,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:15,234 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:15,259 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:15,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:15,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:16,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:16,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:58:16,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 10:58:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 10:58:16,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:16,467 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 31 states. [2018-09-30 10:58:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:16,743 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-09-30 10:58:16,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:58:16,744 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 89 [2018-09-30 10:58:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:16,745 INFO L225 Difference]: With dead ends: 96 [2018-09-30 10:58:16,745 INFO L226 Difference]: Without dead ends: 92 [2018-09-30 10:58:16,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-30 10:58:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-30 10:58:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-30 10:58:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-09-30 10:58:16,748 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2018-09-30 10:58:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:16,748 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-09-30 10:58:16,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 10:58:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-09-30 10:58:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-30 10:58:16,749 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:16,749 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1] [2018-09-30 10:58:16,749 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:16,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:16,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2031480007, now seen corresponding path program 18 times [2018-09-30 10:58:16,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:16,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:16,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:16,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:16,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:16,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:16,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:16,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:17,037 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2018-09-30 10:58:17,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:17,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:17,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:17,208 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:58:17,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:58:17,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:58:17,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:17,209 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 32 states. [2018-09-30 10:58:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:17,475 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-09-30 10:58:17,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:58:17,476 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 89 [2018-09-30 10:58:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:17,477 INFO L225 Difference]: With dead ends: 98 [2018-09-30 10:58:17,477 INFO L226 Difference]: Without dead ends: 94 [2018-09-30 10:58:17,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-09-30 10:58:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-09-30 10:58:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 10:58:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-09-30 10:58:17,482 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 89 [2018-09-30 10:58:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:17,482 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-09-30 10:58:17,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:58:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-09-30 10:58:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 10:58:17,483 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:17,483 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1] [2018-09-30 10:58:17,484 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:17,484 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash -563687403, now seen corresponding path program 29 times [2018-09-30 10:58:17,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:17,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:17,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:17,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:17,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:17,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:17,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:17,687 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:17,746 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-30 10:58:17,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:17,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:17,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:17,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:58:17,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:58:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:58:17,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:17,910 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 32 states. [2018-09-30 10:58:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:18,256 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2018-09-30 10:58:18,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:58:18,256 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 92 [2018-09-30 10:58:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:18,257 INFO L225 Difference]: With dead ends: 99 [2018-09-30 10:58:18,258 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 10:58:18,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 10:58:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 10:58:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 10:58:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-09-30 10:58:18,262 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-09-30 10:58:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:18,262 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-09-30 10:58:18,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:58:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-09-30 10:58:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 10:58:18,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:18,263 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1] [2018-09-30 10:58:18,263 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:18,263 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash -563687341, now seen corresponding path program 19 times [2018-09-30 10:58:18,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:18,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:18,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:18,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:18,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:19,491 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:19,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:19,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:19,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:19,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:19,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:58:19,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 10:58:19,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 10:58:19,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:19,728 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 33 states. [2018-09-30 10:58:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:20,006 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-09-30 10:58:20,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:58:20,007 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2018-09-30 10:58:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:20,008 INFO L225 Difference]: With dead ends: 101 [2018-09-30 10:58:20,008 INFO L226 Difference]: Without dead ends: 97 [2018-09-30 10:58:20,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-30 10:58:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-30 10:58:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 10:58:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-09-30 10:58:20,011 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 92 [2018-09-30 10:58:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:20,012 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-09-30 10:58:20,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 10:58:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-09-30 10:58:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-09-30 10:58:20,012 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:20,012 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1] [2018-09-30 10:58:20,013 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:20,013 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:20,013 INFO L82 PathProgramCache]: Analyzing trace with hash 512143625, now seen corresponding path program 30 times [2018-09-30 10:58:20,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:20,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:20,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:20,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 31 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:20,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:20,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:20,258 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:20,308 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-09-30 10:58:20,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:20,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:20,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:20,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-09-30 10:58:20,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 10:58:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 10:58:20,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:20,671 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 65 states. [2018-09-30 10:58:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:23,552 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2018-09-30 10:58:23,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:58:23,552 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 95 [2018-09-30 10:58:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:23,553 INFO L225 Difference]: With dead ends: 104 [2018-09-30 10:58:23,553 INFO L226 Difference]: Without dead ends: 100 [2018-09-30 10:58:23,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-09-30 10:58:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-09-30 10:58:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-09-30 10:58:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-09-30 10:58:23,557 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 95 [2018-09-30 10:58:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:23,558 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-09-30 10:58:23,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 10:58:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-09-30 10:58:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:58:23,558 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:23,558 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1] [2018-09-30 10:58:23,559 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:23,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:23,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336021, now seen corresponding path program 31 times [2018-09-30 10:58:23,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:23,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:23,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:23,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:23,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:23,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:23,867 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:23,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:23,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:24,079 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:24,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:58:24,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 10:58:24,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 10:58:24,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:24,080 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 34 states. [2018-09-30 10:58:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:24,424 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-09-30 10:58:24,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:58:24,424 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 98 [2018-09-30 10:58:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:24,425 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:58:24,425 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 10:58:24,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 10:58:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 10:58:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 10:58:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-09-30 10:58:24,430 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-09-30 10:58:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:24,430 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-09-30 10:58:24,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 10:58:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-09-30 10:58:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:58:24,431 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:24,431 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1] [2018-09-30 10:58:24,431 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:24,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336083, now seen corresponding path program 20 times [2018-09-30 10:58:24,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:24,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:25,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:25,163 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:25,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:25,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:25,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:25,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:58:25,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:58:25,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:58:25,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:25,371 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 35 states. [2018-09-30 10:58:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:25,700 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2018-09-30 10:58:25,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:58:25,700 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 98 [2018-09-30 10:58:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:25,702 INFO L225 Difference]: With dead ends: 107 [2018-09-30 10:58:25,702 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:58:25,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:58:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 10:58:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 10:58:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-09-30 10:58:25,705 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2018-09-30 10:58:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:25,706 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-09-30 10:58:25,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:58:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-09-30 10:58:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-30 10:58:25,706 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:25,707 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1] [2018-09-30 10:58:25,707 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:25,707 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:25,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918391, now seen corresponding path program 32 times [2018-09-30 10:58:25,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:25,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:25,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:25,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:25,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:25,936 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:25,944 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:25,975 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:25,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:25,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,203 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:26,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:58:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:58:26,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:58:26,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:26,204 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 35 states. [2018-09-30 10:58:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:26,392 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2018-09-30 10:58:26,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:58:26,392 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 101 [2018-09-30 10:58:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:26,394 INFO L225 Difference]: With dead ends: 108 [2018-09-30 10:58:26,394 INFO L226 Difference]: Without dead ends: 104 [2018-09-30 10:58:26,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-09-30 10:58:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-09-30 10:58:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 10:58:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2018-09-30 10:58:26,401 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 101 [2018-09-30 10:58:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:26,401 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2018-09-30 10:58:26,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:58:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2018-09-30 10:58:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-30 10:58:26,402 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:26,402 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1] [2018-09-30 10:58:26,402 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:26,402 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918329, now seen corresponding path program 21 times [2018-09-30 10:58:26,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:26,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:26,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:26,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:26,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,653 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:26,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:26,661 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:26,719 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 10:58:26,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:26,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:26,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:58:26,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:58:26,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:58:26,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:26,921 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 36 states. [2018-09-30 10:58:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:27,229 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2018-09-30 10:58:27,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 10:58:27,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 101 [2018-09-30 10:58:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:27,231 INFO L225 Difference]: With dead ends: 110 [2018-09-30 10:58:27,231 INFO L226 Difference]: Without dead ends: 106 [2018-09-30 10:58:27,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-30 10:58:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-09-30 10:58:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-09-30 10:58:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-09-30 10:58:27,235 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 101 [2018-09-30 10:58:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:27,235 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-09-30 10:58:27,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:58:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-09-30 10:58:27,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-30 10:58:27,236 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:27,236 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1] [2018-09-30 10:58:27,236 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:27,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash 875431701, now seen corresponding path program 33 times [2018-09-30 10:58:27,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:27,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:27,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:27,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 34 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:27,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:27,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:27,752 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:27,813 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-09-30 10:58:27,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:27,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:28,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:28,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-09-30 10:58:28,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 10:58:28,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 10:58:28,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:28,214 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 71 states. [2018-09-30 10:58:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:31,542 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2018-09-30 10:58:31,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:58:31,543 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 104 [2018-09-30 10:58:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:31,544 INFO L225 Difference]: With dead ends: 113 [2018-09-30 10:58:31,544 INFO L226 Difference]: Without dead ends: 109 [2018-09-30 10:58:31,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-30 10:58:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-30 10:58:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:58:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-09-30 10:58:31,547 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 104 [2018-09-30 10:58:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:31,548 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-09-30 10:58:31,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 10:58:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-09-30 10:58:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-09-30 10:58:31,548 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:31,548 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1] [2018-09-30 10:58:31,549 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:31,549 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 945822217, now seen corresponding path program 34 times [2018-09-30 10:58:31,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:31,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:31,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:31,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:31,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:32,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:32,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:32,184 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:32,218 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:32,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:32,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:32,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:32,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:58:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 10:58:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 10:58:32,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:32,459 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 37 states. [2018-09-30 10:58:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:32,918 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2018-09-30 10:58:32,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:58:32,918 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 107 [2018-09-30 10:58:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:32,919 INFO L225 Difference]: With dead ends: 114 [2018-09-30 10:58:32,919 INFO L226 Difference]: Without dead ends: 110 [2018-09-30 10:58:32,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-09-30 10:58:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-09-30 10:58:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-09-30 10:58:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-09-30 10:58:32,922 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 107 [2018-09-30 10:58:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:32,923 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-09-30 10:58:32,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 10:58:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-09-30 10:58:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-09-30 10:58:32,923 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:32,924 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1] [2018-09-30 10:58:32,924 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:32,924 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 945822279, now seen corresponding path program 22 times [2018-09-30 10:58:32,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:32,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:32,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:32,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:32,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:33,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:33,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:33,160 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:33,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:33,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:33,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:33,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:33,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:58:33,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:58:33,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:58:33,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:33,374 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 38 states. [2018-09-30 10:58:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:33,704 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2018-09-30 10:58:33,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:58:33,705 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 107 [2018-09-30 10:58:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:33,706 INFO L225 Difference]: With dead ends: 116 [2018-09-30 10:58:33,706 INFO L226 Difference]: Without dead ends: 112 [2018-09-30 10:58:33,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-30 10:58:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-09-30 10:58:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-09-30 10:58:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2018-09-30 10:58:33,709 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 107 [2018-09-30 10:58:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:33,710 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2018-09-30 10:58:33,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:58:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2018-09-30 10:58:33,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:58:33,710 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:33,710 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1] [2018-09-30 10:58:33,711 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:33,711 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:33,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643925, now seen corresponding path program 35 times [2018-09-30 10:58:33,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:33,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:33,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:33,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:33,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:33,993 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:33,993 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:34,000 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:34,428 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 10:58:34,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:34,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:34,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:34,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:58:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:58:34,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:58:34,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:34,909 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 38 states. [2018-09-30 10:58:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:35,167 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2018-09-30 10:58:35,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:58:35,167 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 110 [2018-09-30 10:58:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:35,168 INFO L225 Difference]: With dead ends: 117 [2018-09-30 10:58:35,168 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 10:58:35,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 10:58:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-30 10:58:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-30 10:58:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-09-30 10:58:35,173 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-09-30 10:58:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:35,173 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-09-30 10:58:35,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:58:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-09-30 10:58:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:58:35,174 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:35,174 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1] [2018-09-30 10:58:35,174 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:35,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643987, now seen corresponding path program 23 times [2018-09-30 10:58:35,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:35,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:35,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:35,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:35,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:36,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:36,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:36,962 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:37,026 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-30 10:58:37,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:37,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:37,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:37,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:58:37,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 10:58:37,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 10:58:37,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:37,223 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 39 states. [2018-09-30 10:58:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:37,389 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-09-30 10:58:37,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:58:37,390 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2018-09-30 10:58:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:37,391 INFO L225 Difference]: With dead ends: 119 [2018-09-30 10:58:37,391 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 10:58:37,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 10:58:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 10:58:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 10:58:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-09-30 10:58:37,395 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 110 [2018-09-30 10:58:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:37,395 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-09-30 10:58:37,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 10:58:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-09-30 10:58:37,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 10:58:37,396 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:37,396 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1] [2018-09-30 10:58:37,396 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:37,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:37,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1445413239, now seen corresponding path program 36 times [2018-09-30 10:58:37,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:37,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:37,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:37,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:37,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 37 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:37,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:37,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:37,678 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:37,740 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-09-30 10:58:37,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:37,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:38,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:38,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-09-30 10:58:38,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 10:58:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 10:58:38,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:38,257 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 77 states. [2018-09-30 10:58:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:42,425 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-09-30 10:58:42,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:58:42,425 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 113 [2018-09-30 10:58:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:42,426 INFO L225 Difference]: With dead ends: 122 [2018-09-30 10:58:42,426 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 10:58:42,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 10:58:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-09-30 10:58:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-09-30 10:58:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2018-09-30 10:58:42,429 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 113 [2018-09-30 10:58:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:42,429 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2018-09-30 10:58:42,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 10:58:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2018-09-30 10:58:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 10:58:42,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:42,430 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1] [2018-09-30 10:58:42,430 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:42,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:42,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745685, now seen corresponding path program 37 times [2018-09-30 10:58:42,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:42,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:42,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:42,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:42,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:43,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:43,380 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:43,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:43,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:45,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:45,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:58:45,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:58:45,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:58:45,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:45,434 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 40 states. [2018-09-30 10:58:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:45,773 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2018-09-30 10:58:45,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 10:58:45,774 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 116 [2018-09-30 10:58:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:45,775 INFO L225 Difference]: With dead ends: 123 [2018-09-30 10:58:45,775 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 10:58:45,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 10:58:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 10:58:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:58:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-09-30 10:58:45,778 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-09-30 10:58:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:45,778 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-09-30 10:58:45,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:58:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-09-30 10:58:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-30 10:58:45,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:45,779 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1] [2018-09-30 10:58:45,779 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:45,779 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745747, now seen corresponding path program 24 times [2018-09-30 10:58:45,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:45,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:45,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:45,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:45,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:45,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:45,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:45,976 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:46,043 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2018-09-30 10:58:46,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:46,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:46,249 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:46,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:58:46,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:58:46,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:58:46,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:46,250 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 41 states. [2018-09-30 10:58:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:46,494 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2018-09-30 10:58:46,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:58:46,494 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 116 [2018-09-30 10:58:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:46,495 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:58:46,495 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 10:58:46,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 10:58:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-30 10:58:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-30 10:58:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-09-30 10:58:46,500 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 116 [2018-09-30 10:58:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:46,500 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-09-30 10:58:46,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:58:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-09-30 10:58:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-30 10:58:46,500 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:46,500 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1] [2018-09-30 10:58:46,501 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:46,501 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 308544265, now seen corresponding path program 38 times [2018-09-30 10:58:46,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:46,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:46,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:46,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:46,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:46,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:46,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:46,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:46,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:46,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:46,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:47,143 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:47,143 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:58:47,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:58:47,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:58:47,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:47,144 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 41 states. [2018-09-30 10:58:47,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:47,498 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2018-09-30 10:58:47,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:58:47,499 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 119 [2018-09-30 10:58:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:47,500 INFO L225 Difference]: With dead ends: 126 [2018-09-30 10:58:47,500 INFO L226 Difference]: Without dead ends: 122 [2018-09-30 10:58:47,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-30 10:58:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-09-30 10:58:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-09-30 10:58:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-09-30 10:58:47,504 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 119 [2018-09-30 10:58:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:47,504 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-09-30 10:58:47,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:58:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-09-30 10:58:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-30 10:58:47,505 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:47,505 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1] [2018-09-30 10:58:47,505 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:47,505 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:47,505 INFO L82 PathProgramCache]: Analyzing trace with hash 308544327, now seen corresponding path program 25 times [2018-09-30 10:58:47,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:47,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:47,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:47,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:47,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:47,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:47,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:47,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:47,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:47,987 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:47,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:58:47,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 10:58:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 10:58:47,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:47,988 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 42 states. [2018-09-30 10:58:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:48,342 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2018-09-30 10:58:48,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 10:58:48,343 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 119 [2018-09-30 10:58:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:48,343 INFO L225 Difference]: With dead ends: 128 [2018-09-30 10:58:48,344 INFO L226 Difference]: Without dead ends: 124 [2018-09-30 10:58:48,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-09-30 10:58:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-09-30 10:58:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 10:58:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-09-30 10:58:48,346 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 119 [2018-09-30 10:58:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:48,347 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-09-30 10:58:48,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 10:58:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-09-30 10:58:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 10:58:48,347 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:48,347 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1] [2018-09-30 10:58:48,347 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:48,348 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:48,348 INFO L82 PathProgramCache]: Analyzing trace with hash 613624213, now seen corresponding path program 39 times [2018-09-30 10:58:48,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:48,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:48,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:48,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:48,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 40 proven. 2340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:48,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:48,572 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:48,582 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:48,658 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-09-30 10:58:48,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:48,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:49,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:49,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-09-30 10:58:49,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 10:58:49,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 10:58:49,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:49,262 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 83 states. [2018-09-30 10:58:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:54,123 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2018-09-30 10:58:54,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:58:54,123 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 122 [2018-09-30 10:58:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:54,124 INFO L225 Difference]: With dead ends: 131 [2018-09-30 10:58:54,124 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 10:58:54,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 10:58:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 10:58:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 10:58:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-09-30 10:58:54,128 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 122 [2018-09-30 10:58:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:54,128 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-09-30 10:58:54,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 10:58:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-09-30 10:58:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-30 10:58:54,129 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:54,129 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1] [2018-09-30 10:58:54,129 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:54,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556745, now seen corresponding path program 40 times [2018-09-30 10:58:54,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:54,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:54,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:54,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:54,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:54,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:54,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:54,349 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:54,387 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:54,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:54,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:54,623 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:54,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:58:54,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 10:58:54,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 10:58:54,623 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:54,624 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 43 states. [2018-09-30 10:58:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:55,149 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2018-09-30 10:58:55,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:58:55,150 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 125 [2018-09-30 10:58:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:55,150 INFO L225 Difference]: With dead ends: 132 [2018-09-30 10:58:55,150 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 10:58:55,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 10:58:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-30 10:58:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-30 10:58:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2018-09-30 10:58:55,154 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 125 [2018-09-30 10:58:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:55,154 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2018-09-30 10:58:55,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 10:58:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2018-09-30 10:58:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-30 10:58:55,155 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:55,155 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1] [2018-09-30 10:58:55,155 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:55,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556807, now seen corresponding path program 26 times [2018-09-30 10:58:55,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:55,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:55,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:55,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:55,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:55,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:55,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:55,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:55,469 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:55,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:55,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:56,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:56,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:58:56,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:58:56,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:58:56,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:56,030 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 44 states. [2018-09-30 10:58:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:56,220 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2018-09-30 10:58:56,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:58:56,221 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 125 [2018-09-30 10:58:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:56,222 INFO L225 Difference]: With dead ends: 134 [2018-09-30 10:58:56,222 INFO L226 Difference]: Without dead ends: 130 [2018-09-30 10:58:56,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-30 10:58:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-09-30 10:58:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-09-30 10:58:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-09-30 10:58:56,226 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 125 [2018-09-30 10:58:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:56,226 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-09-30 10:58:56,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:58:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-09-30 10:58:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:58:56,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:56,227 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1] [2018-09-30 10:58:56,227 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:56,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:56,227 INFO L82 PathProgramCache]: Analyzing trace with hash -819137259, now seen corresponding path program 41 times [2018-09-30 10:58:56,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:56,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:56,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:56,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:56,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:56,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:56,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:56,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:56,516 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-30 10:58:56,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:56,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:57,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:57,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:58:57,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:58:57,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:58:57,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:57,652 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 44 states. [2018-09-30 10:58:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:58,100 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2018-09-30 10:58:58,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:58:58,100 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 128 [2018-09-30 10:58:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:58,101 INFO L225 Difference]: With dead ends: 135 [2018-09-30 10:58:58,101 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 10:58:58,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 10:58:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 10:58:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 10:58:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-09-30 10:58:58,105 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-09-30 10:58:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:58,105 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-09-30 10:58:58,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:58:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-09-30 10:58:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:58:58,106 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:58,106 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1] [2018-09-30 10:58:58,106 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:58,106 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:58,106 INFO L82 PathProgramCache]: Analyzing trace with hash -819137197, now seen corresponding path program 27 times [2018-09-30 10:58:58,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:58,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:58,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:58,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:58,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:58,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:58,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:58,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:58,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2018-09-30 10:58:58,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:58,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:58,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:58,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:58:58,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 10:58:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 10:58:58,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:58,722 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 45 states. [2018-09-30 10:58:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:59,074 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2018-09-30 10:58:59,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:58:59,075 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 128 [2018-09-30 10:58:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:59,076 INFO L225 Difference]: With dead ends: 137 [2018-09-30 10:58:59,076 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:58:59,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:58:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-30 10:58:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-30 10:58:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-09-30 10:58:59,081 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 128 [2018-09-30 10:58:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:59,081 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-09-30 10:58:59,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 10:58:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-09-30 10:58:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-30 10:58:59,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:59,082 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1] [2018-09-30 10:58:59,082 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:59,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1087532041, now seen corresponding path program 42 times [2018-09-30 10:58:59,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:59,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:59,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:59,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:59,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 43 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:59,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:59,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:59,313 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:59,390 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-09-30 10:58:59,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:59,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:59,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:59,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-09-30 10:58:59,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 10:58:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 10:58:59,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:59,985 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 89 states. [2018-09-30 10:59:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:05,723 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2018-09-30 10:59:05,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 10:59:05,724 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 131 [2018-09-30 10:59:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:05,724 INFO L225 Difference]: With dead ends: 140 [2018-09-30 10:59:05,724 INFO L226 Difference]: Without dead ends: 136 [2018-09-30 10:59:05,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:05,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-09-30 10:59:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-09-30 10:59:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-30 10:59:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-09-30 10:59:05,727 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 131 [2018-09-30 10:59:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:05,727 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-09-30 10:59:05,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 10:59:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-09-30 10:59:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:59:05,728 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:05,728 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1] [2018-09-30 10:59:05,728 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:05,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:05,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158741, now seen corresponding path program 43 times [2018-09-30 10:59:05,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:05,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:05,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:05,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:05,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:06,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:06,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:06,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:06,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:06,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:06,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:59:06,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 10:59:06,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 10:59:06,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:06,408 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 46 states. [2018-09-30 10:59:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:06,786 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2018-09-30 10:59:06,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 10:59:06,787 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 134 [2018-09-30 10:59:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:06,788 INFO L225 Difference]: With dead ends: 141 [2018-09-30 10:59:06,788 INFO L226 Difference]: Without dead ends: 137 [2018-09-30 10:59:06,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-30 10:59:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-30 10:59:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-30 10:59:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-09-30 10:59:06,791 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-09-30 10:59:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:06,791 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-09-30 10:59:06,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 10:59:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-09-30 10:59:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:59:06,792 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:06,792 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1] [2018-09-30 10:59:06,792 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:06,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:06,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158803, now seen corresponding path program 28 times [2018-09-30 10:59:06,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:06,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:06,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:06,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:06,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:07,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:07,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:07,028 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:07,067 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:07,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:07,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:07,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:07,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:59:07,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:59:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:59:07,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:07,301 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 47 states. [2018-09-30 10:59:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:07,523 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2018-09-30 10:59:07,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:59:07,523 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 134 [2018-09-30 10:59:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:07,524 INFO L225 Difference]: With dead ends: 143 [2018-09-30 10:59:07,525 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 10:59:07,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 10:59:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 10:59:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:59:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-09-30 10:59:07,528 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 134 [2018-09-30 10:59:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:07,529 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-09-30 10:59:07,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:59:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-09-30 10:59:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-30 10:59:07,529 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:07,529 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1] [2018-09-30 10:59:07,530 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:07,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:07,530 INFO L82 PathProgramCache]: Analyzing trace with hash -742027127, now seen corresponding path program 44 times [2018-09-30 10:59:07,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:07,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:07,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:07,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:07,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:07,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:07,772 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:07,815 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:07,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:07,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:08,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:08,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:59:08,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:59:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:59:08,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:08,072 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 47 states. [2018-09-30 10:59:08,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:08,491 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2018-09-30 10:59:08,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:59:08,492 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 137 [2018-09-30 10:59:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:08,493 INFO L225 Difference]: With dead ends: 144 [2018-09-30 10:59:08,493 INFO L226 Difference]: Without dead ends: 140 [2018-09-30 10:59:08,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-30 10:59:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-30 10:59:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-30 10:59:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-09-30 10:59:08,497 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 137 [2018-09-30 10:59:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:08,497 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-09-30 10:59:08,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:59:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-09-30 10:59:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-30 10:59:08,498 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:08,498 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1] [2018-09-30 10:59:08,499 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:08,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:08,499 INFO L82 PathProgramCache]: Analyzing trace with hash -742027065, now seen corresponding path program 29 times [2018-09-30 10:59:08,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:08,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:08,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:08,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:08,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:08,747 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:08,747 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:08,754 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:08,831 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-30 10:59:08,831 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:08,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:09,083 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:09,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:59:09,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:59:09,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:59:09,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:09,084 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 48 states. [2018-09-30 10:59:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:09,462 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-09-30 10:59:09,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:59:09,463 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 137 [2018-09-30 10:59:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:09,463 INFO L225 Difference]: With dead ends: 146 [2018-09-30 10:59:09,463 INFO L226 Difference]: Without dead ends: 142 [2018-09-30 10:59:09,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-30 10:59:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-30 10:59:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-30 10:59:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2018-09-30 10:59:09,468 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 137 [2018-09-30 10:59:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:09,468 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2018-09-30 10:59:09,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:59:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2018-09-30 10:59:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 10:59:09,469 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:09,469 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1] [2018-09-30 10:59:09,470 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:09,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 467971093, now seen corresponding path program 45 times [2018-09-30 10:59:09,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:09,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:09,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:09,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:09,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:09,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:09,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:09,728 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:09,823 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-09-30 10:59:09,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:09,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:10,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:10,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:59:10,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:59:10,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:59:10,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:10,065 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 48 states. [2018-09-30 10:59:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:10,986 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2018-09-30 10:59:10,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:59:10,986 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 140 [2018-09-30 10:59:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:10,987 INFO L225 Difference]: With dead ends: 147 [2018-09-30 10:59:10,987 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:59:10,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:59:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 10:59:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 10:59:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-09-30 10:59:10,991 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-09-30 10:59:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:10,992 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-09-30 10:59:10,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:59:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-09-30 10:59:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-30 10:59:10,993 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:10,993 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1] [2018-09-30 10:59:10,993 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:10,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:10,993 INFO L82 PathProgramCache]: Analyzing trace with hash 467971155, now seen corresponding path program 30 times [2018-09-30 10:59:10,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:10,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:10,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:10,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:10,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:11,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:11,485 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:11,492 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:11,574 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2018-09-30 10:59:11,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:11,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:11,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:11,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:59:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:59:11,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:59:11,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:11,866 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 49 states. [2018-09-30 10:59:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:12,296 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-09-30 10:59:12,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:59:12,296 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 140 [2018-09-30 10:59:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:12,297 INFO L225 Difference]: With dead ends: 149 [2018-09-30 10:59:12,297 INFO L226 Difference]: Without dead ends: 145 [2018-09-30 10:59:12,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-30 10:59:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-30 10:59:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-30 10:59:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-09-30 10:59:12,300 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 140 [2018-09-30 10:59:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:12,300 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-09-30 10:59:12,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:59:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-09-30 10:59:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 10:59:12,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:12,301 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1] [2018-09-30 10:59:12,302 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:12,302 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash -135572215, now seen corresponding path program 46 times [2018-09-30 10:59:12,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:12,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:12,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:12,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:12,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 47 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:12,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:12,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:12,593 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:12,635 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:12,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:12,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:13,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:13,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-09-30 10:59:13,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 10:59:13,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 10:59:13,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:13,245 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 97 states. [2018-09-30 10:59:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:20,476 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2018-09-30 10:59:20,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 10:59:20,477 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 143 [2018-09-30 10:59:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:20,477 INFO L225 Difference]: With dead ends: 152 [2018-09-30 10:59:20,478 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 10:59:20,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 10:59:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-09-30 10:59:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-30 10:59:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-09-30 10:59:20,482 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 143 [2018-09-30 10:59:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:20,482 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-09-30 10:59:20,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 10:59:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-09-30 10:59:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:59:20,483 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:20,483 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1] [2018-09-30 10:59:20,483 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:20,483 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159787, now seen corresponding path program 47 times [2018-09-30 10:59:20,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:20,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:20,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:20,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:20,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:20,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:20,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:20,907 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:20,994 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 10:59:20,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:20,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:21,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:21,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:59:21,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 10:59:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 10:59:21,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:21,288 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 50 states. [2018-09-30 10:59:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:21,748 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2018-09-30 10:59:21,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 10:59:21,749 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 146 [2018-09-30 10:59:21,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:21,750 INFO L225 Difference]: With dead ends: 153 [2018-09-30 10:59:21,750 INFO L226 Difference]: Without dead ends: 149 [2018-09-30 10:59:21,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-09-30 10:59:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-09-30 10:59:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 10:59:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-09-30 10:59:21,753 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-09-30 10:59:21,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:21,753 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-09-30 10:59:21,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 10:59:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-09-30 10:59:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:59:21,754 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:21,754 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 1, 1] [2018-09-30 10:59:21,754 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:21,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159725, now seen corresponding path program 31 times [2018-09-30 10:59:21,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:21,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:21,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:21,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:21,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:22,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:22,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:22,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:22,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:22,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:22,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:59:22,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 10:59:22,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 10:59:22,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:22,355 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 51 states. [2018-09-30 10:59:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:22,813 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2018-09-30 10:59:22,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:59:22,814 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 146 [2018-09-30 10:59:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:22,815 INFO L225 Difference]: With dead ends: 155 [2018-09-30 10:59:22,815 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 10:59:22,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 10:59:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 10:59:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 10:59:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-09-30 10:59:22,819 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2018-09-30 10:59:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:22,819 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-09-30 10:59:22,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 10:59:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-09-30 10:59:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-30 10:59:22,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:22,820 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1] [2018-09-30 10:59:22,820 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:22,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1691072905, now seen corresponding path program 48 times [2018-09-30 10:59:22,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:22,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:22,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:22,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:22,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 49 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:23,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:23,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:23,079 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:23,176 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-09-30 10:59:23,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:23,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:23,778 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:23,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-09-30 10:59:23,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 10:59:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 10:59:23,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:23,779 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 101 states. [2018-09-30 10:59:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:31,951 INFO L93 Difference]: Finished difference Result 158 states and 165 transitions. [2018-09-30 10:59:31,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 10:59:31,951 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 149 [2018-09-30 10:59:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:31,952 INFO L225 Difference]: With dead ends: 158 [2018-09-30 10:59:31,952 INFO L226 Difference]: Without dead ends: 154 [2018-09-30 10:59:31,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-09-30 10:59:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-09-30 10:59:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 10:59:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2018-09-30 10:59:31,956 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 149 [2018-09-30 10:59:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:31,957 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2018-09-30 10:59:31,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 10:59:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2018-09-30 10:59:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-30 10:59:31,957 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:31,958 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1] [2018-09-30 10:59:31,958 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:31,958 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:31,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030187, now seen corresponding path program 49 times [2018-09-30 10:59:31,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:31,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:31,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:31,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:31,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:32,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:32,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:32,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:32,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:32,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:32,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:59:32,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:59:32,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:59:32,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:32,555 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 52 states. [2018-09-30 10:59:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:33,028 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2018-09-30 10:59:33,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 10:59:33,028 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 152 [2018-09-30 10:59:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:33,029 INFO L225 Difference]: With dead ends: 159 [2018-09-30 10:59:33,029 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 10:59:33,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 10:59:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 10:59:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 10:59:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-09-30 10:59:33,034 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-09-30 10:59:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:33,034 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-09-30 10:59:33,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:59:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-09-30 10:59:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-30 10:59:33,035 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:33,035 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 1, 1] [2018-09-30 10:59:33,035 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:33,035 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030125, now seen corresponding path program 32 times [2018-09-30 10:59:33,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:33,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:33,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:33,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:33,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:33,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:33,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:33,319 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:33,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:33,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:33,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:33,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:33,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:59:33,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:59:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:59:33,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:33,640 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 53 states. [2018-09-30 10:59:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:34,224 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2018-09-30 10:59:34,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:59:34,224 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 152 [2018-09-30 10:59:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:34,225 INFO L225 Difference]: With dead ends: 161 [2018-09-30 10:59:34,225 INFO L226 Difference]: Without dead ends: 157 [2018-09-30 10:59:34,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-09-30 10:59:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-09-30 10:59:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-09-30 10:59:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-09-30 10:59:34,229 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 152 [2018-09-30 10:59:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:34,230 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-09-30 10:59:34,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:59:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-09-30 10:59:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-30 10:59:34,231 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:34,231 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1] [2018-09-30 10:59:34,231 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:34,231 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash 200195593, now seen corresponding path program 50 times [2018-09-30 10:59:34,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:34,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:34,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:34,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:34,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:34,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:34,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:34,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:34,740 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:34,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:34,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:35,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:35,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:59:35,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:59:35,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:59:35,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:35,119 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 53 states. [2018-09-30 10:59:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:35,507 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2018-09-30 10:59:35,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:59:35,507 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 155 [2018-09-30 10:59:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:35,508 INFO L225 Difference]: With dead ends: 162 [2018-09-30 10:59:35,508 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 10:59:35,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 10:59:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-09-30 10:59:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-09-30 10:59:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2018-09-30 10:59:35,512 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 155 [2018-09-30 10:59:35,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:35,512 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2018-09-30 10:59:35,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:59:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2018-09-30 10:59:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-30 10:59:35,513 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:35,514 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 1, 1] [2018-09-30 10:59:35,514 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:35,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 200195655, now seen corresponding path program 33 times [2018-09-30 10:59:35,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:35,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:35,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:35,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:35,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:35,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:35,887 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:35,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:36,003 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 10:59:36,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:36,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:36,406 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:36,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:59:36,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 10:59:36,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 10:59:36,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:36,408 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 54 states. [2018-09-30 10:59:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:36,773 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2018-09-30 10:59:36,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 10:59:36,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 155 [2018-09-30 10:59:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:36,774 INFO L225 Difference]: With dead ends: 164 [2018-09-30 10:59:36,774 INFO L226 Difference]: Without dead ends: 160 [2018-09-30 10:59:36,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-09-30 10:59:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-09-30 10:59:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-09-30 10:59:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-09-30 10:59:36,778 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 155 [2018-09-30 10:59:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:36,779 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-09-30 10:59:36,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 10:59:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-09-30 10:59:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:59:36,780 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:36,780 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1] [2018-09-30 10:59:36,780 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:36,780 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1681224043, now seen corresponding path program 51 times [2018-09-30 10:59:36,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:36,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:36,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:36,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:36,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 52 proven. 3978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:37,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:37,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:37,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:37,169 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-09-30 10:59:37,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:37,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:37,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:37,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-09-30 10:59:37,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 10:59:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 10:59:37,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:37,862 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 107 states. [2018-09-30 10:59:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:47,095 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2018-09-30 10:59:47,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 10:59:47,096 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 158 [2018-09-30 10:59:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:47,096 INFO L225 Difference]: With dead ends: 167 [2018-09-30 10:59:47,097 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:59:47,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:59:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 10:59:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 10:59:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-09-30 10:59:47,100 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 158 [2018-09-30 10:59:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:47,101 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-09-30 10:59:47,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 10:59:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-09-30 10:59:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-30 10:59:47,102 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:47,102 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1] [2018-09-30 10:59:47,102 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:47,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387319, now seen corresponding path program 52 times [2018-09-30 10:59:47,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:47,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:47,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:47,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:47,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:47,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:47,448 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:47,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:47,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:47,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:47,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:59:47,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 10:59:47,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 10:59:47,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:47,727 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 55 states. [2018-09-30 10:59:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:48,267 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2018-09-30 10:59:48,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:59:48,267 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 161 [2018-09-30 10:59:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:48,268 INFO L225 Difference]: With dead ends: 168 [2018-09-30 10:59:48,269 INFO L226 Difference]: Without dead ends: 164 [2018-09-30 10:59:48,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-09-30 10:59:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-09-30 10:59:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 10:59:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2018-09-30 10:59:48,272 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 161 [2018-09-30 10:59:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:48,272 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2018-09-30 10:59:48,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 10:59:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2018-09-30 10:59:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-30 10:59:48,272 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:48,273 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 1, 1] [2018-09-30 10:59:48,273 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:48,273 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387257, now seen corresponding path program 34 times [2018-09-30 10:59:48,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:48,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:48,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:48,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:48,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:48,577 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:48,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:48,584 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:48,631 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:48,632 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:48,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:48,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:48,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:59:48,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:59:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:59:48,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:48,919 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 56 states. [2018-09-30 10:59:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:49,479 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2018-09-30 10:59:49,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:59:49,479 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 161 [2018-09-30 10:59:49,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:49,480 INFO L225 Difference]: With dead ends: 170 [2018-09-30 10:59:49,480 INFO L226 Difference]: Without dead ends: 166 [2018-09-30 10:59:49,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-09-30 10:59:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-09-30 10:59:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-09-30 10:59:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-09-30 10:59:49,485 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 161 [2018-09-30 10:59:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:49,485 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-09-30 10:59:49,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:59:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-09-30 10:59:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-30 10:59:49,486 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:49,486 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1] [2018-09-30 10:59:49,486 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:49,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:49,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694699, now seen corresponding path program 53 times [2018-09-30 10:59:49,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:49,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:49,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:49,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:49,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:49,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:49,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:49,788 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:49,883 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 10:59:49,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:49,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:50,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:50,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:59:50,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:59:50,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:59:50,166 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:50,166 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 56 states. [2018-09-30 10:59:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:50,580 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2018-09-30 10:59:50,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:59:50,580 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 164 [2018-09-30 10:59:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:50,581 INFO L225 Difference]: With dead ends: 171 [2018-09-30 10:59:50,581 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 10:59:50,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 10:59:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 10:59:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 10:59:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-09-30 10:59:50,585 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-09-30 10:59:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:50,585 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-09-30 10:59:50,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:59:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-09-30 10:59:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-09-30 10:59:50,586 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:50,586 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 1, 1] [2018-09-30 10:59:50,587 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:50,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:50,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694637, now seen corresponding path program 35 times [2018-09-30 10:59:50,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:50,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:50,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:50,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:50,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:50,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:50,961 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:50,976 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:51,075 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-30 10:59:51,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:51,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:51,702 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:51,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:59:51,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 10:59:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 10:59:51,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:51,703 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 57 states. [2018-09-30 10:59:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:52,252 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2018-09-30 10:59:52,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:59:52,252 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 164 [2018-09-30 10:59:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:52,253 INFO L225 Difference]: With dead ends: 173 [2018-09-30 10:59:52,253 INFO L226 Difference]: Without dead ends: 169 [2018-09-30 10:59:52,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-09-30 10:59:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-09-30 10:59:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 10:59:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-09-30 10:59:52,257 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 164 [2018-09-30 10:59:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:52,257 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-09-30 10:59:52,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 10:59:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-09-30 10:59:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-30 10:59:52,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:52,258 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1] [2018-09-30 10:59:52,258 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:52,259 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:52,259 INFO L82 PathProgramCache]: Analyzing trace with hash -249780471, now seen corresponding path program 54 times [2018-09-30 10:59:52,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:52,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:52,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:52,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:52,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 55 proven. 4455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:52,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:52,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:52,587 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:52,695 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-09-30 10:59:52,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:52,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:53,398 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:53,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-09-30 10:59:53,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 10:59:53,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 10:59:53,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:53,399 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 113 states. [2018-09-30 11:00:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:04,106 INFO L93 Difference]: Finished difference Result 176 states and 183 transitions. [2018-09-30 11:00:04,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 11:00:04,106 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 167 [2018-09-30 11:00:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:04,107 INFO L225 Difference]: With dead ends: 176 [2018-09-30 11:00:04,107 INFO L226 Difference]: Without dead ends: 172 [2018-09-30 11:00:04,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-09-30 11:00:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-09-30 11:00:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-09-30 11:00:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2018-09-30 11:00:04,111 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 167 [2018-09-30 11:00:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:04,111 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2018-09-30 11:00:04,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 11:00:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2018-09-30 11:00:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 11:00:04,112 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:04,112 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1] [2018-09-30 11:00:04,112 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:04,112 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751445, now seen corresponding path program 55 times [2018-09-30 11:00:04,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:04,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:04,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:04,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:04,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:04,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:04,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:04,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:04,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:04,888 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:04,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 11:00:04,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 11:00:04,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 11:00:04,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:04,889 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 58 states. [2018-09-30 11:00:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:05,300 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2018-09-30 11:00:05,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 11:00:05,300 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 170 [2018-09-30 11:00:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:05,301 INFO L225 Difference]: With dead ends: 177 [2018-09-30 11:00:05,301 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 11:00:05,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 11:00:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-09-30 11:00:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 11:00:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-09-30 11:00:05,304 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-09-30 11:00:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:05,305 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-09-30 11:00:05,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 11:00:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-09-30 11:00:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 11:00:05,305 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:05,305 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 1, 1] [2018-09-30 11:00:05,305 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:05,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:05,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751507, now seen corresponding path program 36 times [2018-09-30 11:00:05,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:05,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:05,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:05,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:05,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:05,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:05,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:05,650 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:05,749 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2018-09-30 11:00:05,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:05,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:06,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:06,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 11:00:06,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 11:00:06,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 11:00:06,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:06,051 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 59 states. [2018-09-30 11:00:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:06,383 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2018-09-30 11:00:06,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 11:00:06,384 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 170 [2018-09-30 11:00:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:06,384 INFO L225 Difference]: With dead ends: 179 [2018-09-30 11:00:06,384 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 11:00:06,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 11:00:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 11:00:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 11:00:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-09-30 11:00:06,387 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 170 [2018-09-30 11:00:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:06,388 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-09-30 11:00:06,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 11:00:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-09-30 11:00:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 11:00:06,388 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:06,389 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1] [2018-09-30 11:00:06,389 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:06,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:06,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428215, now seen corresponding path program 56 times [2018-09-30 11:00:06,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:06,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:06,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:06,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:06,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:06,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:06,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:06,861 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:06,912 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:06,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:06,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:07,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:07,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 11:00:07,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 11:00:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 11:00:07,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:07,260 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 59 states. [2018-09-30 11:00:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:07,850 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-09-30 11:00:07,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 11:00:07,851 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 173 [2018-09-30 11:00:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:07,851 INFO L225 Difference]: With dead ends: 180 [2018-09-30 11:00:07,852 INFO L226 Difference]: Without dead ends: 176 [2018-09-30 11:00:07,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-09-30 11:00:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-09-30 11:00:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-09-30 11:00:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-09-30 11:00:07,857 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 173 [2018-09-30 11:00:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:07,857 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-09-30 11:00:07,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 11:00:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-09-30 11:00:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 11:00:07,858 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:07,858 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 1, 1] [2018-09-30 11:00:07,858 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:07,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:07,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428153, now seen corresponding path program 37 times [2018-09-30 11:00:07,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:07,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:07,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:07,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:07,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:08,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:08,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:08,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:08,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:08,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:08,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 11:00:08,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 11:00:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 11:00:08,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:08,551 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 60 states. [2018-09-30 11:00:09,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:09,161 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2018-09-30 11:00:09,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 11:00:09,162 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 173 [2018-09-30 11:00:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:09,162 INFO L225 Difference]: With dead ends: 182 [2018-09-30 11:00:09,163 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 11:00:09,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 11:00:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-09-30 11:00:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-09-30 11:00:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2018-09-30 11:00:09,167 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 173 [2018-09-30 11:00:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:09,167 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2018-09-30 11:00:09,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 11:00:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2018-09-30 11:00:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-30 11:00:09,168 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:09,169 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1] [2018-09-30 11:00:09,169 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:09,169 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash 200069397, now seen corresponding path program 57 times [2018-09-30 11:00:09,169 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:09,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:09,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:09,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:09,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 58 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:09,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:09,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:09,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:09,604 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-09-30 11:00:09,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:09,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:10,358 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:10,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-09-30 11:00:10,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 11:00:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 11:00:10,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:10,360 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 119 states. [2018-09-30 11:00:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:22,863 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2018-09-30 11:00:22,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 11:00:22,863 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 176 [2018-09-30 11:00:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:22,864 INFO L225 Difference]: With dead ends: 185 [2018-09-30 11:00:22,864 INFO L226 Difference]: Without dead ends: 181 [2018-09-30 11:00:22,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-09-30 11:00:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-09-30 11:00:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-30 11:00:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-09-30 11:00:22,867 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 176 [2018-09-30 11:00:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:22,867 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-09-30 11:00:22,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 11:00:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-09-30 11:00:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-09-30 11:00:22,868 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:22,868 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1] [2018-09-30 11:00:22,868 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:22,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761783, now seen corresponding path program 58 times [2018-09-30 11:00:22,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:22,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:22,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:22,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,208 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:23,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:23,220 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:23,272 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:23,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:23,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,592 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:23,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 11:00:23,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 11:00:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 11:00:23,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:23,593 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 61 states. [2018-09-30 11:00:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:24,086 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2018-09-30 11:00:24,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 11:00:24,087 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 179 [2018-09-30 11:00:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:24,088 INFO L225 Difference]: With dead ends: 186 [2018-09-30 11:00:24,088 INFO L226 Difference]: Without dead ends: 182 [2018-09-30 11:00:24,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-09-30 11:00:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-09-30 11:00:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-09-30 11:00:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2018-09-30 11:00:24,091 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 179 [2018-09-30 11:00:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:24,091 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2018-09-30 11:00:24,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 11:00:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2018-09-30 11:00:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-09-30 11:00:24,092 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:24,092 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 1, 1] [2018-09-30 11:00:24,092 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:24,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761721, now seen corresponding path program 38 times [2018-09-30 11:00:24,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:24,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:24,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:24,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:24,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:24,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:24,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:24,568 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:24,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:24,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:24,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:24,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 11:00:24,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 11:00:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 11:00:24,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:24,884 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 62 states. [2018-09-30 11:00:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:25,391 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2018-09-30 11:00:25,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 11:00:25,391 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 179 [2018-09-30 11:00:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:25,392 INFO L225 Difference]: With dead ends: 188 [2018-09-30 11:00:25,392 INFO L226 Difference]: Without dead ends: 184 [2018-09-30 11:00:25,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-09-30 11:00:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-09-30 11:00:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 11:00:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2018-09-30 11:00:25,395 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 179 [2018-09-30 11:00:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:25,396 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2018-09-30 11:00:25,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 11:00:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2018-09-30 11:00:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 11:00:25,396 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:25,397 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1] [2018-09-30 11:00:25,397 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:25,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1282737003, now seen corresponding path program 59 times [2018-09-30 11:00:25,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:25,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:25,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:25,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:25,734 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:25,734 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:25,741 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:25,856 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-30 11:00:25,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:25,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,170 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:26,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 11:00:26,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 11:00:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 11:00:26,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:26,172 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 62 states. [2018-09-30 11:00:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:26,555 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2018-09-30 11:00:26,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 11:00:26,556 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 182 [2018-09-30 11:00:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:26,557 INFO L225 Difference]: With dead ends: 189 [2018-09-30 11:00:26,557 INFO L226 Difference]: Without dead ends: 185 [2018-09-30 11:00:26,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-09-30 11:00:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-09-30 11:00:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-30 11:00:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-09-30 11:00:26,561 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-09-30 11:00:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:26,562 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-09-30 11:00:26,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 11:00:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-09-30 11:00:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 11:00:26,562 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:26,562 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 1, 1] [2018-09-30 11:00:26,563 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:26,563 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1282736941, now seen corresponding path program 39 times [2018-09-30 11:00:26,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:26,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:26,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:26,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:26,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:26,917 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:27,043 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2018-09-30 11:00:27,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:27,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:27,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:27,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 11:00:27,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 11:00:27,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 11:00:27,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:27,557 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 63 states. [2018-09-30 11:00:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:28,068 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2018-09-30 11:00:28,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 11:00:28,068 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 182 [2018-09-30 11:00:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:28,069 INFO L225 Difference]: With dead ends: 191 [2018-09-30 11:00:28,069 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 11:00:28,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 11:00:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 11:00:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 11:00:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-09-30 11:00:28,072 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 182 [2018-09-30 11:00:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:28,072 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-09-30 11:00:28,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 11:00:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-09-30 11:00:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-30 11:00:28,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:28,073 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1] [2018-09-30 11:00:28,073 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:28,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:28,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1692584823, now seen corresponding path program 60 times [2018-09-30 11:00:28,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:28,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:28,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:28,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 61 proven. 5490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:28,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:28,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:28,513 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:28,640 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-09-30 11:00:28,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:28,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 5551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:29,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-09-30 11:00:29,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-30 11:00:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-30 11:00:29,445 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:29,445 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 125 states. [2018-09-30 11:00:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:43,575 INFO L93 Difference]: Finished difference Result 194 states and 201 transitions. [2018-09-30 11:00:43,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 11:00:43,575 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 185 [2018-09-30 11:00:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:43,576 INFO L225 Difference]: With dead ends: 194 [2018-09-30 11:00:43,576 INFO L226 Difference]: Without dead ends: 190 [2018-09-30 11:00:43,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-09-30 11:00:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-09-30 11:00:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-09-30 11:00:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-09-30 11:00:43,581 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 185 [2018-09-30 11:00:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-09-30 11:00:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-30 11:00:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-09-30 11:00:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 11:00:43,582 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:43,582 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1] [2018-09-30 11:00:43,582 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:43,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash -876967915, now seen corresponding path program 61 times [2018-09-30 11:00:43,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:43,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:43,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:43,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:43,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:43,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:43,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:44,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:44,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:44,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 11:00:44,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 11:00:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 11:00:44,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:44,380 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 64 states. [2018-09-30 11:00:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:44,846 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2018-09-30 11:00:44,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 11:00:44,846 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 188 [2018-09-30 11:00:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:44,847 INFO L225 Difference]: With dead ends: 195 [2018-09-30 11:00:44,847 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 11:00:44,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 11:00:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 11:00:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 11:00:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-09-30 11:00:44,851 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-09-30 11:00:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:44,852 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-09-30 11:00:44,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 11:00:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-09-30 11:00:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 11:00:44,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:44,853 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 1, 1] [2018-09-30 11:00:44,853 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:44,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash -876967853, now seen corresponding path program 40 times [2018-09-30 11:00:44,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:44,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:44,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:44,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:44,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:45,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:45,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:45,230 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:45,286 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:45,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:45,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:45,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:45,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 11:00:45,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 11:00:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 11:00:45,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:45,616 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 65 states. [2018-09-30 11:00:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:46,054 INFO L93 Difference]: Finished difference Result 197 states and 203 transitions. [2018-09-30 11:00:46,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 11:00:46,054 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 188 [2018-09-30 11:00:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:46,055 INFO L225 Difference]: With dead ends: 197 [2018-09-30 11:00:46,055 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 11:00:46,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 11:00:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-09-30 11:00:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-30 11:00:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-09-30 11:00:46,059 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 188 [2018-09-30 11:00:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:46,059 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-09-30 11:00:46,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 11:00:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-09-30 11:00:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-30 11:00:46,060 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:46,060 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1] [2018-09-30 11:00:46,060 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:46,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:46,061 INFO L82 PathProgramCache]: Analyzing trace with hash 536344841, now seen corresponding path program 62 times [2018-09-30 11:00:46,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:46,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:46,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:46,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:46,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:46,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:46,498 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:46,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:46,562 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:46,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:46,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:46,909 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:46,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 11:00:46,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 11:00:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 11:00:46,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:46,910 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 65 states. [2018-09-30 11:00:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:47,324 INFO L93 Difference]: Finished difference Result 198 states and 203 transitions. [2018-09-30 11:00:47,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 11:00:47,324 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 191 [2018-09-30 11:00:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:47,324 INFO L225 Difference]: With dead ends: 198 [2018-09-30 11:00:47,324 INFO L226 Difference]: Without dead ends: 194 [2018-09-30 11:00:47,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:47,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-09-30 11:00:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-09-30 11:00:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 11:00:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2018-09-30 11:00:47,329 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 191 [2018-09-30 11:00:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:47,329 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2018-09-30 11:00:47,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 11:00:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2018-09-30 11:00:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-30 11:00:47,330 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:47,330 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1] [2018-09-30 11:00:47,330 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:47,330 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash 536344903, now seen corresponding path program 41 times [2018-09-30 11:00:47,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:47,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:47,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:47,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:47,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:47,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:47,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:47,992 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:48,114 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-09-30 11:00:48,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:48,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:48,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:48,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 11:00:48,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 11:00:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 11:00:48,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:48,449 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand 66 states. [2018-09-30 11:00:48,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:48,875 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2018-09-30 11:00:48,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 11:00:48,876 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 191 [2018-09-30 11:00:48,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:48,876 INFO L225 Difference]: With dead ends: 200 [2018-09-30 11:00:48,876 INFO L226 Difference]: Without dead ends: 196 [2018-09-30 11:00:48,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-09-30 11:00:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-09-30 11:00:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-09-30 11:00:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-09-30 11:00:48,882 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 191 [2018-09-30 11:00:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:48,882 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-09-30 11:00:48,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 11:00:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-09-30 11:00:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 11:00:48,883 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:48,883 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1] [2018-09-30 11:00:48,883 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:48,883 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:48,884 INFO L82 PathProgramCache]: Analyzing trace with hash 972256149, now seen corresponding path program 63 times [2018-09-30 11:00:48,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:48,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:48,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:48,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:48,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 64 proven. 6048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:49,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:49,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:49,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:49,454 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-09-30 11:00:49,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:49,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 0 proven. 6112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:50,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:50,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-09-30 11:00:50,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-30 11:00:50,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-30 11:00:50,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:50,320 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 131 states. [2018-09-30 11:01:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:06,237 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2018-09-30 11:01:06,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 11:01:06,237 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 194 [2018-09-30 11:01:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:06,237 INFO L225 Difference]: With dead ends: 203 [2018-09-30 11:01:06,237 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 11:01:06,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 11:01:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 11:01:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 11:01:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-09-30 11:01:06,242 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 194 [2018-09-30 11:01:06,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:06,242 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-09-30 11:01:06,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-30 11:01:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-09-30 11:01:06,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-30 11:01:06,243 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:06,243 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1] [2018-09-30 11:01:06,243 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:06,243 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:06,244 INFO L82 PathProgramCache]: Analyzing trace with hash -775070327, now seen corresponding path program 64 times [2018-09-30 11:01:06,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:06,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:06,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:06,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:06,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:06,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:06,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:06,739 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:06,795 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:06,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:06,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:07,197 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:07,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 11:01:07,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 11:01:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 11:01:07,198 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:07,198 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 67 states. [2018-09-30 11:01:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:07,810 INFO L93 Difference]: Finished difference Result 204 states and 209 transitions. [2018-09-30 11:01:07,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 11:01:07,810 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 197 [2018-09-30 11:01:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:07,811 INFO L225 Difference]: With dead ends: 204 [2018-09-30 11:01:07,811 INFO L226 Difference]: Without dead ends: 200 [2018-09-30 11:01:07,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-09-30 11:01:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-09-30 11:01:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-09-30 11:01:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-09-30 11:01:07,815 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 197 [2018-09-30 11:01:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:07,816 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-09-30 11:01:07,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 11:01:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-09-30 11:01:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-30 11:01:07,817 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:07,817 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 1, 1] [2018-09-30 11:01:07,817 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:07,817 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:07,817 INFO L82 PathProgramCache]: Analyzing trace with hash -775070265, now seen corresponding path program 42 times [2018-09-30 11:01:07,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:07,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:07,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:07,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:07,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:08,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:08,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:08,376 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:08,508 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2018-09-30 11:01:08,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:08,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:08,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:08,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 11:01:08,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 11:01:08,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 11:01:08,865 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:08,866 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 68 states. [2018-09-30 11:01:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:09,422 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2018-09-30 11:01:09,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 11:01:09,422 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 197 [2018-09-30 11:01:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:09,423 INFO L225 Difference]: With dead ends: 206 [2018-09-30 11:01:09,423 INFO L226 Difference]: Without dead ends: 202 [2018-09-30 11:01:09,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-09-30 11:01:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-09-30 11:01:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-09-30 11:01:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2018-09-30 11:01:09,426 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 197 [2018-09-30 11:01:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:09,427 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2018-09-30 11:01:09,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 11:01:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2018-09-30 11:01:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-30 11:01:09,427 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:09,427 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1] [2018-09-30 11:01:09,428 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:09,428 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash -374489323, now seen corresponding path program 65 times [2018-09-30 11:01:09,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:09,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:09,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:09,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:09,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:09,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:09,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:09,827 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:09,956 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-30 11:01:09,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:09,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:10,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:10,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 11:01:10,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 11:01:10,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 11:01:10,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:10,312 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 68 states. [2018-09-30 11:01:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:10,958 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2018-09-30 11:01:10,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 11:01:10,958 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 200 [2018-09-30 11:01:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:10,959 INFO L225 Difference]: With dead ends: 207 [2018-09-30 11:01:10,959 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 11:01:10,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 11:01:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 11:01:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 11:01:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-09-30 11:01:10,962 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-09-30 11:01:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:10,962 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-09-30 11:01:10,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 11:01:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-09-30 11:01:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-30 11:01:10,963 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:10,963 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 1, 1] [2018-09-30 11:01:10,964 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:10,964 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:10,964 INFO L82 PathProgramCache]: Analyzing trace with hash -374489261, now seen corresponding path program 43 times [2018-09-30 11:01:10,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:10,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:10,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:10,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:10,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:11,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:11,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:11,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:11,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:11,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:11,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 11:01:11,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 11:01:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 11:01:11,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:11,799 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 69 states. [2018-09-30 11:01:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:12,311 INFO L93 Difference]: Finished difference Result 209 states and 215 transitions. [2018-09-30 11:01:12,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 11:01:12,311 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 200 [2018-09-30 11:01:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:12,312 INFO L225 Difference]: With dead ends: 209 [2018-09-30 11:01:12,312 INFO L226 Difference]: Without dead ends: 205 [2018-09-30 11:01:12,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-09-30 11:01:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-09-30 11:01:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-09-30 11:01:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-09-30 11:01:12,317 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 200 [2018-09-30 11:01:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:12,317 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-09-30 11:01:12,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 11:01:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-09-30 11:01:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 11:01:12,318 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:12,318 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1] [2018-09-30 11:01:12,318 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:12,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1915052553, now seen corresponding path program 66 times [2018-09-30 11:01:12,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:12,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:12,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:12,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:12,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 67 proven. 6633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:12,734 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:12,734 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:12,742 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:12,875 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-09-30 11:01:12,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:12,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 0 proven. 6700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:14,041 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:14,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-09-30 11:01:14,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-09-30 11:01:14,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-09-30 11:01:14,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:14,043 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 137 states. [2018-09-30 11:01:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:32,732 INFO L93 Difference]: Finished difference Result 212 states and 219 transitions. [2018-09-30 11:01:32,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-30 11:01:32,733 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 203 [2018-09-30 11:01:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:32,733 INFO L225 Difference]: With dead ends: 212 [2018-09-30 11:01:32,733 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 11:01:32,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 11:01:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-09-30 11:01:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-09-30 11:01:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2018-09-30 11:01:32,737 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 203 [2018-09-30 11:01:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:32,738 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2018-09-30 11:01:32,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-09-30 11:01:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2018-09-30 11:01:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 11:01:32,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:32,739 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1] [2018-09-30 11:01:32,739 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:32,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452693, now seen corresponding path program 67 times [2018-09-30 11:01:32,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:32,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:33,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:33,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:33,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:33,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:33,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:33,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 11:01:33,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 11:01:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 11:01:33,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:33,570 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 70 states. [2018-09-30 11:01:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:34,183 INFO L93 Difference]: Finished difference Result 213 states and 218 transitions. [2018-09-30 11:01:34,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 11:01:34,184 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 206 [2018-09-30 11:01:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:34,184 INFO L225 Difference]: With dead ends: 213 [2018-09-30 11:01:34,184 INFO L226 Difference]: Without dead ends: 209 [2018-09-30 11:01:34,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-30 11:01:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-09-30 11:01:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 11:01:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-09-30 11:01:34,188 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-09-30 11:01:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:34,188 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-09-30 11:01:34,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 11:01:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-09-30 11:01:34,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 11:01:34,189 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:34,189 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 1, 1] [2018-09-30 11:01:34,189 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:34,189 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452755, now seen corresponding path program 44 times [2018-09-30 11:01:34,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:34,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:34,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:34,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:34,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:34,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:34,601 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:34,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:34,667 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:34,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:34,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:35,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:35,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 11:01:35,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 11:01:35,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 11:01:35,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:35,043 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 71 states. [2018-09-30 11:01:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:35,741 INFO L93 Difference]: Finished difference Result 215 states and 221 transitions. [2018-09-30 11:01:35,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 11:01:35,742 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 206 [2018-09-30 11:01:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:35,742 INFO L225 Difference]: With dead ends: 215 [2018-09-30 11:01:35,743 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 11:01:35,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 11:01:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 11:01:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 11:01:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-09-30 11:01:35,747 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 206 [2018-09-30 11:01:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:35,747 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-09-30 11:01:35,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 11:01:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-09-30 11:01:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-30 11:01:35,748 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:35,748 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1] [2018-09-30 11:01:35,749 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:35,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289353, now seen corresponding path program 68 times [2018-09-30 11:01:35,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:35,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:35,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:35,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:35,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:36,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:36,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:36,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:36,245 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:36,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:36,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:36,663 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:36,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 11:01:36,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 11:01:36,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 11:01:36,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:36,665 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 71 states. [2018-09-30 11:01:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:37,319 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2018-09-30 11:01:37,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 11:01:37,319 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 209 [2018-09-30 11:01:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:37,320 INFO L225 Difference]: With dead ends: 216 [2018-09-30 11:01:37,320 INFO L226 Difference]: Without dead ends: 212 [2018-09-30 11:01:37,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-09-30 11:01:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-09-30 11:01:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-09-30 11:01:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2018-09-30 11:01:37,325 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 209 [2018-09-30 11:01:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:37,325 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2018-09-30 11:01:37,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 11:01:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2018-09-30 11:01:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-30 11:01:37,326 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:37,326 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 1, 1] [2018-09-30 11:01:37,326 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:37,326 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289415, now seen corresponding path program 45 times [2018-09-30 11:01:37,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:37,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:37,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:37,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:37,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:37,719 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:37,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:37,726 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:37,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 11:01:37,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:37,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:38,234 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:38,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 11:01:38,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 11:01:38,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 11:01:38,235 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:38,235 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 72 states. [2018-09-30 11:01:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:39,187 INFO L93 Difference]: Finished difference Result 218 states and 224 transitions. [2018-09-30 11:01:39,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 11:01:39,187 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 209 [2018-09-30 11:01:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:39,188 INFO L225 Difference]: With dead ends: 218 [2018-09-30 11:01:39,188 INFO L226 Difference]: Without dead ends: 214 [2018-09-30 11:01:39,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-09-30 11:01:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-09-30 11:01:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-30 11:01:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2018-09-30 11:01:39,191 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 209 [2018-09-30 11:01:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:39,191 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions. [2018-09-30 11:01:39,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 11:01:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions. [2018-09-30 11:01:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-09-30 11:01:39,192 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:39,192 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1] [2018-09-30 11:01:39,192 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:39,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:39,192 INFO L82 PathProgramCache]: Analyzing trace with hash -645499371, now seen corresponding path program 69 times [2018-09-30 11:01:39,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:39,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:39,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:39,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:39,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 70 proven. 7245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:39,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:39,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:39,645 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:39,787 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-09-30 11:01:39,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:39,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 0 proven. 7315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:40,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:40,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142 [2018-09-30 11:01:40,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-09-30 11:01:40,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-09-30 11:01:40,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:40,806 INFO L87 Difference]: Start difference. First operand 214 states and 216 transitions. Second operand 143 states. Received shutdown request... [2018-09-30 11:01:44,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 11:01:44,970 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 11:01:44,975 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 11:01:44,975 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:01:44 BoogieIcfgContainer [2018-09-30 11:01:44,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 11:01:44,976 INFO L168 Benchmark]: Toolchain (without parser) took 249583.70 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 1.6 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 253.6 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. [2018-09-30 11:01:44,978 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:01:44,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:01:44,979 INFO L168 Benchmark]: Boogie Preprocessor took 22.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:01:44,979 INFO L168 Benchmark]: RCFGBuilder took 316.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 11:01:44,980 INFO L168 Benchmark]: TraceAbstraction took 249194.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 1.6 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 234.0 MB. Max. memory is 7.1 GB. [2018-09-30 11:01:44,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 316.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249194.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 1.6 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 234.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (214states) and FLOYD_HOARE automaton (currently 61 states, 143 states before enhancement), while ReachableStatesComputation was computing reachable states (88 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 249.1s OverallTime, 116 OverallIterations, 70 TraceHistogramMax, 167.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 669 SDtfs, 2516 SDslu, 11003 SDs, 0 SdLazy, 12346 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18254 GetRequests, 11522 SyntacticMatches, 0 SemanticMatches, 6732 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=115, 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: 0.4s AutomataMinimizationTime, 115 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 68.5s InterpolantComputationTime, 24961 NumberOfCodeBlocks, 24961 NumberOfCodeBlocksAsserted, 2319 NumberOfCheckSat, 24731 ConstructedInterpolants, 0 QuantifiedInterpolants, 10504551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 29607 ConjunctsInSsa, 4267 ConjunctsInUnsatCore, 230 InterpolantComputations, 2 PerfectInterpolantSequences, 4083/572671 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_11-01-44-992.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_11-01-44-992.csv Completed graceful shutdown