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/Octopussy.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:52:41,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:52:41,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:52:41,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:52:41,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:52:41,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:52:41,413 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:52:41,415 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:52:41,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:52:41,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:52:41,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 09:52:41,422 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 09:52:41,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 09:52:41,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 09:52:41,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 09:52:41,433 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 09:52:41,434 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 09:52:41,439 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 09:52:41,443 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 09:52:41,447 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 09:52:41,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 09:52:41,450 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 09:52:41,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-04 09:52:41,453 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-04 09:52:41,453 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-04 09:52:41,454 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-04 09:52:41,455 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-04 09:52:41,456 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-04 09:52:41,456 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-04 09:52:41,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-04 09:52:41,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-04 09:52:41,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-04 09:52:41,464 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 [2018-10-04 09:52:41,486 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:52:41,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:52:41,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:52:41,487 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:52:41,488 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:52:41,488 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:52:41,488 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:52:41,488 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:52:41,489 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:52:41,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:52:41,490 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:52:41,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:52:41,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:52:41,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:52:41,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:52:41,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:52:41,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:52:41,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:52:41,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:52:41,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:52:41,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:52:41,492 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:52:41,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:52:41,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:52:41,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:52:41,493 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:52:41,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:52:41,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:52:41,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:52:41,570 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:52:41,571 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:52:41,571 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl [2018-10-04 09:52:41,572 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Octopussy.bpl' [2018-10-04 09:52:41,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:52:41,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:52:41,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:52:41,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:52:41,625 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:52:41,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,663 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 09:52:41,664 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 09:52:41,664 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 09:52:41,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:52:41,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:52:41,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:52:41,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:52:41,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/1) ... [2018-10-04 09:52:41,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:52:41,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:52:41,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:52:41,686 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:52:41,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (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 [2018-10-04 09:52:41,744 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-04 09:52:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-04 09:52:41,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-04 09:52:41,947 INFO L338 CfgBuilder]: Using library mode [2018-10-04 09:52:41,947 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:52:41 BoogieIcfgContainer [2018-10-04 09:52:41,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:52:41,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:52:41,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:52:41,952 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:52:41,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:52:41" (1/2) ... [2018-10-04 09:52:41,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b806e0 and model type Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:52:41, skipping insertion in model container [2018-10-04 09:52:41,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:52:41" (2/2) ... [2018-10-04 09:52:41,955 INFO L112 eAbstractionObserver]: Analyzing ICFG Octopussy.bpl [2018-10-04 09:52:41,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:52:41,979 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:52:42,034 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:52:42,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:52:42,035 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:52:42,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:52:42,035 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:52:42,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:52:42,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:52:42,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:52:42,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:52:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 09:52:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 09:52:42,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:42,069 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 09:52:42,072 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:42,079 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-04 09:52:42,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:42,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:42,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:42,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:52:42,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:52:42,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:52:42,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:52:42,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:42,252 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 09:52:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:42,313 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-04 09:52:42,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:52:42,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 09:52:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:42,327 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:52:42,328 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 09:52:42,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:52:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 09:52:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 09:52:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 09:52:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 09:52:42,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 09:52:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:42,362 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 09:52:42,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:52:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 09:52:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 09:52:42,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:42,362 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 09:52:42,363 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:42,363 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:42,363 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-04 09:52:42,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:42,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:42,536 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 [2018-10-04 09:52:42,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:42,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:42,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:52:42,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:52:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:52:42,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:42,661 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 09:52:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:42,695 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 09:52:42,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:52:42,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 09:52:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:42,698 INFO L225 Difference]: With dead ends: 8 [2018-10-04 09:52:42,699 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 09:52:42,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 09:52:42,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 09:52:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 09:52:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 09:52:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 09:52:42,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 09:52:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:42,702 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 09:52:42,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:52:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 09:52:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 09:52:42,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:42,703 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 09:52:42,703 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:42,703 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:42,704 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-04 09:52:42,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:42,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:42,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:42,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:42,774 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 [2018-10-04 09:52:42,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:42,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:42,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:42,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:42,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:42,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:52:42,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:52:42,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:52:42,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:42,847 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 09:52:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:42,881 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 09:52:42,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:52:42,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 09:52:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:42,883 INFO L225 Difference]: With dead ends: 9 [2018-10-04 09:52:42,883 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 09:52:42,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 09:52:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 09:52:42,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 09:52:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 09:52:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 09:52:42,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 09:52:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:42,886 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 09:52:42,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:52:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 09:52:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:52:42,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:42,887 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 09:52:42,888 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:42,888 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-04 09:52:42,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:42,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:42,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:42,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:43,013 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 [2018-10-04 09:52:43,032 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:43,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 09:52:43,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:43,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:43,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:52:43,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:52:43,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:52:43,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:43,148 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 09:52:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:43,173 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 09:52:43,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:52:43,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 09:52:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:43,175 INFO L225 Difference]: With dead ends: 10 [2018-10-04 09:52:43,175 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 09:52:43,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 09:52:43,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 09:52:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 09:52:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 09:52:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 09:52:43,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 09:52:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:43,179 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 09:52:43,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:52:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 09:52:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 09:52:43,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:43,179 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 09:52:43,180 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:43,180 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:43,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-04 09:52:43,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:43,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:43,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:43,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:43,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:43,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:43,513 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:43,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:43,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,570 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:43,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:52:43,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:52:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:52:43,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:43,571 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 09:52:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:43,613 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 09:52:43,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:52:43,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 09:52:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:43,615 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:52:43,617 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 09:52:43,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 5 [2018-10-04 09:52:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 09:52:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 09:52:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 09:52:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 09:52:43,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 09:52:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:43,621 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 09:52:43,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:52:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 09:52:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 09:52:43,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:43,622 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 09:52:43,623 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:43,623 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-04 09:52:43,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:43,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:43,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:43,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:43,748 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 [2018-10-04 09:52:43,766 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:43,825 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 09:52:43,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:43,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:43,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:43,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:52:43,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:52:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:52:43,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:43,936 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 09:52:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:43,962 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 09:52:43,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:52:43,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 09:52:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:43,963 INFO L225 Difference]: With dead ends: 12 [2018-10-04 09:52:43,963 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:52:43,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 09:52:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:52:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:52:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:52:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 09:52:43,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 09:52:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:43,967 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 09:52:43,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:52:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 09:52:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:52:43,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:43,968 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 09:52:43,968 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:43,969 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:43,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-04 09:52:43,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:43,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:43,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:43,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:44,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:44,102 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 [2018-10-04 09:52:44,112 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:44,122 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 09:52:44,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:44,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:44,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:44,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:52:44,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:52:44,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:52:44,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:44,188 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 09:52:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:44,218 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:52:44,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:52:44,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 09:52:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:44,219 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:52:44,220 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:52:44,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-04 09:52:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:52:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:52:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:52:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:52:44,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 09:52:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:44,224 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:52:44,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:52:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:52:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:52:44,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:44,225 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 09:52:44,226 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:44,226 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-04 09:52:44,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:44,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:44,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:44,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:44,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:44,717 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 [2018-10-04 09:52:44,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:44,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:44,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:44,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:52:44,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:52:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:52:44,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:44,857 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 09:52:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:44,896 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 09:52:44,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:52:44,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 09:52:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:44,898 INFO L225 Difference]: With dead ends: 14 [2018-10-04 09:52:44,898 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 09:52:44,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-04 09:52:44,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 09:52:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 09:52:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 09:52:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 09:52:44,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 09:52:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:44,901 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 09:52:44,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:52:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 09:52:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 09:52:44,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:44,902 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 09:52:44,902 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:44,903 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-04 09:52:44,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:44,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:44,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:44,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:45,108 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 [2018-10-04 09:52:45,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:45,138 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:45,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:45,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,204 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:45,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:52:45,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:52:45,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:52:45,205 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:45,206 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 09:52:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:45,261 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 09:52:45,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:52:45,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 09:52:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:45,262 INFO L225 Difference]: With dead ends: 15 [2018-10-04 09:52:45,262 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 09:52:45,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-04 09:52:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 09:52:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 09:52:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 09:52:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 09:52:45,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 09:52:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:45,267 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 09:52:45,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:52:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 09:52:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 09:52:45,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:45,267 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 09:52:45,268 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:45,268 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:45,268 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-04 09:52:45,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:45,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:45,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:45,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:45,384 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 [2018-10-04 09:52:45,393 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:45,406 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 09:52:45,407 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:45,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:45,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:52:45,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:52:45,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:52:45,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:45,480 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 09:52:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:45,511 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 09:52:45,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:52:45,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 09:52:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:45,513 INFO L225 Difference]: With dead ends: 16 [2018-10-04 09:52:45,513 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 09:52:45,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-04 09:52:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 09:52:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 09:52:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 09:52:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 09:52:45,517 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 09:52:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:45,518 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 09:52:45,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:52:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 09:52:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 09:52:45,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:45,518 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 09:52:45,519 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:45,519 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-04 09:52:45,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:45,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:45,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:45,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:45,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:45,756 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:45,786 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:45,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:45,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:45,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:45,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:52:45,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:52:45,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:52:45,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:45,852 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 09:52:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:45,927 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:52:45,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:52:45,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 09:52:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:45,929 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:52:45,929 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:52:45,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 09:52:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:52:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:52:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:52:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:52:45,932 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 09:52:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:45,933 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:52:45,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:52:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:52:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:52:45,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:45,934 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 09:52:45,934 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:45,934 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-04 09:52:45,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:45,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:45,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:45,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:46,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:46,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:46,285 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:46,298 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 09:52:46,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:46,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:46,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:46,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:52:46,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:52:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:52:46,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:46,432 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 09:52:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:46,474 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 09:52:46,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:52:46,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 09:52:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:46,476 INFO L225 Difference]: With dead ends: 18 [2018-10-04 09:52:46,476 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 09:52:46,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 12 [2018-10-04 09:52:46,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 09:52:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 09:52:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 09:52:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 09:52:46,480 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 09:52:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:46,481 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 09:52:46,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:52:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 09:52:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 09:52:46,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:46,482 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 09:52:46,482 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:46,482 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:46,482 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-04 09:52:46,483 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:46,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:46,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:46,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:46,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:46,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:46,629 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 [2018-10-04 09:52:46,636 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:46,654 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:52:46,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:46,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:46,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:46,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:52:46,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:52:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:52:46,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:46,757 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 09:52:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:46,807 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 09:52:46,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:52:46,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 09:52:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:46,809 INFO L225 Difference]: With dead ends: 19 [2018-10-04 09:52:46,809 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 09:52:46,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 13 [2018-10-04 09:52:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 09:52:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 09:52:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 09:52:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 09:52:46,813 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 09:52:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:46,814 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 09:52:46,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:52:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 09:52:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 09:52:46,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:46,815 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 09:52:46,815 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:46,815 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-04 09:52:46,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:46,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:46,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:46,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:46,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:47,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:47,026 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 [2018-10-04 09:52:47,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:47,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:47,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:47,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:52:47,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:52:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:52:47,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:47,120 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 09:52:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:47,302 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 09:52:47,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:52:47,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 09:52:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:47,305 INFO L225 Difference]: With dead ends: 20 [2018-10-04 09:52:47,305 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 09:52:47,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 09:52:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 09:52:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 09:52:47,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 09:52:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 09:52:47,309 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 09:52:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:47,310 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 09:52:47,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:52:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 09:52:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 09:52:47,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:47,311 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 09:52:47,311 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:47,311 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:47,311 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-04 09:52:47,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:47,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:47,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:47,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:47,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:47,578 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 [2018-10-04 09:52:47,588 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:47,617 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:47,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:47,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:47,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:47,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:52:47,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:52:47,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:52:47,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:47,701 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 09:52:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:47,742 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:52:47,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:52:47,743 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 09:52:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:47,744 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:52:47,744 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:52:47,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-04 09:52:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:52:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:52:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:52:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:52:47,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 09:52:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:47,749 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:52:47,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:52:47,750 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:52:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:52:47,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:47,750 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 09:52:47,751 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:47,751 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-04 09:52:47,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:47,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:47,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:47,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:48,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:48,051 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 [2018-10-04 09:52:48,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:48,090 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 09:52:48,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:48,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:48,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:48,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:52:48,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:52:48,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:52:48,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:48,184 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 09:52:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:48,235 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 09:52:48,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:52:48,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 09:52:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:48,237 INFO L225 Difference]: With dead ends: 22 [2018-10-04 09:52:48,237 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 09:52:48,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-04 09:52:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 09:52:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 09:52:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 09:52:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 09:52:48,241 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 09:52:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:48,241 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 09:52:48,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:52:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 09:52:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 09:52:48,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:48,242 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 09:52:48,242 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:48,242 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-04 09:52:48,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:48,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:48,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:48,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:48,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:48,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:48,751 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 [2018-10-04 09:52:48,758 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:48,792 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:48,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:48,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:48,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:48,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:52:48,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:52:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:52:48,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:48,984 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 09:52:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:49,061 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 09:52:49,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:52:49,062 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 09:52:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:49,063 INFO L225 Difference]: With dead ends: 23 [2018-10-04 09:52:49,063 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 09:52:49,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 17 [2018-10-04 09:52:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 09:52:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 09:52:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 09:52:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 09:52:49,066 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 09:52:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:49,067 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 09:52:49,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:52:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 09:52:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 09:52:49,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:49,068 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 09:52:49,068 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:49,068 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-04 09:52:49,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:49,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:49,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:49,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:49,354 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 [2018-10-04 09:52:49,363 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:49,390 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 09:52:49,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:49,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:49,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:49,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:52:49,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:52:49,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:52:49,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:49,489 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 09:52:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:49,554 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 09:52:49,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:52:49,554 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 09:52:49,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:49,554 INFO L225 Difference]: With dead ends: 24 [2018-10-04 09:52:49,555 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 09:52:49,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 18 [2018-10-04 09:52:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 09:52:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 09:52:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 09:52:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 09:52:49,559 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 09:52:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:49,560 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 09:52:49,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:52:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 09:52:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 09:52:49,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:49,561 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 09:52:49,561 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:49,561 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-04 09:52:49,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:49,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:49,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:49,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:49,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:49,774 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:49,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:49,776 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 [2018-10-04 09:52:49,785 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:49,800 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 09:52:49,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:49,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:49,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:49,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:52:49,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:52:49,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:52:49,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:49,929 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 09:52:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:50,060 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:52:50,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:52:50,061 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 09:52:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:50,061 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:52:50,062 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:52:50,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-04 09:52:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:52:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:52:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:52:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:52:50,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 09:52:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:50,066 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:52:50,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:52:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:52:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:52:50,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:50,067 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 09:52:50,067 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:50,067 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-04 09:52:50,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:50,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:50,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:50,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:50,464 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:50,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:50,488 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 [2018-10-04 09:52:50,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:50,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:50,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:50,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:52:50,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:52:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:52:50,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:50,609 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 09:52:50,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:50,715 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 09:52:50,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:52:50,716 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 09:52:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:50,717 INFO L225 Difference]: With dead ends: 26 [2018-10-04 09:52:50,717 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 09:52:50,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 7 [2018-10-04 09:52:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 09:52:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 09:52:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 09:52:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 09:52:50,721 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 09:52:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:50,721 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 09:52:50,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:52:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 09:52:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 09:52:50,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:50,722 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 09:52:50,722 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:50,722 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-04 09:52:50,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:50,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:50,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:50,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:51,082 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:51,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:51,123 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 [2018-10-04 09:52:51,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:51,166 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:51,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:51,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:51,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:51,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:52:51,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:52:51,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:52:51,284 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:51,284 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 09:52:51,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:51,323 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 09:52:51,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:52:51,328 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 09:52:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:51,328 INFO L225 Difference]: With dead ends: 27 [2018-10-04 09:52:51,328 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:52:51,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 8 [2018-10-04 09:52:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:52:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:52:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:52:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 09:52:51,332 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 09:52:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:51,332 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 09:52:51,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:52:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 09:52:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 09:52:51,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:51,333 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 09:52:51,333 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:51,333 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-04 09:52:51,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:51,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:51,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:51,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:51,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:51,878 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:51,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:51,939 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 [2018-10-04 09:52:51,948 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:51,964 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 09:52:51,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:51,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:52,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:52,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:52:52,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:52:52,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:52:52,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:52,040 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 09:52:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:52,085 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 09:52:52,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:52:52,087 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 09:52:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:52,088 INFO L225 Difference]: With dead ends: 28 [2018-10-04 09:52:52,088 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 09:52:52,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 9 [2018-10-04 09:52:52,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 09:52:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 09:52:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 09:52:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 09:52:52,092 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 09:52:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:52,092 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 09:52:52,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:52:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 09:52:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 09:52:52,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:52,093 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 09:52:52,093 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:52,093 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-04 09:52:52,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:52,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:52,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:52,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:52,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:52,303 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:52,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:52,354 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 [2018-10-04 09:52:52,362 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:52,376 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:52,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:52,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:52,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:52,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:52:52,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:52:52,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:52:52,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:52,536 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 09:52:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:52,864 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:52:52,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:52:52,864 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 09:52:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:52,865 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:52:52,865 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:52:52,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 10 [2018-10-04 09:52:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:52:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:52:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:52:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:52:52,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 09:52:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:52,869 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:52:52,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:52:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:52:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:52:52,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:52,870 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 09:52:52,870 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:52,871 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-04 09:52:52,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:52,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:52,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:52,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:52,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:53,114 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:53,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:53,148 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 [2018-10-04 09:52:53,155 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:53,176 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 09:52:53,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:53,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:53,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:53,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:52:53,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:52:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:52:53,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:53,288 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 09:52:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:53,345 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 09:52:53,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:52:53,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 09:52:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:53,352 INFO L225 Difference]: With dead ends: 30 [2018-10-04 09:52:53,353 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 09:52:53,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 11 [2018-10-04 09:52:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 09:52:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 09:52:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 09:52:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 09:52:53,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 09:52:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:53,357 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 09:52:53,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:52:53,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 09:52:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 09:52:53,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:53,357 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 09:52:53,358 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:53,358 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:53,358 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-04 09:52:53,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:53,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:53,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:53,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:53,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:53,765 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:53,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:53,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:52:53,828 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:53,858 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:52:53,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:53,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:54,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:54,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:52:54,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:52:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:52:54,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:54,009 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 09:52:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:54,068 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 09:52:54,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:52:54,069 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 09:52:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:54,070 INFO L225 Difference]: With dead ends: 31 [2018-10-04 09:52:54,070 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 09:52:54,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 12 [2018-10-04 09:52:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 09:52:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 09:52:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 09:52:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 09:52:54,075 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 09:52:54,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:54,075 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 09:52:54,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:52:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 09:52:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 09:52:54,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:54,076 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 09:52:54,076 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:54,076 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-04 09:52:54,077 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:54,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:54,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:54,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:54,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:54,395 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:54,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:54,528 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 [2018-10-04 09:52:54,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:54,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:54,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:54,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:52:54,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:52:54,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:52:54,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:54,677 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 09:52:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:54,722 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 09:52:54,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:52:54,723 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 09:52:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:54,723 INFO L225 Difference]: With dead ends: 32 [2018-10-04 09:52:54,723 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 09:52:54,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 13 [2018-10-04 09:52:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 09:52:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 09:52:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 09:52:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 09:52:54,728 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 09:52:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:54,728 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 09:52:54,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:52:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 09:52:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 09:52:54,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:54,729 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 09:52:54,729 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:54,729 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-04 09:52:54,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:54,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:54,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:54,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:55,383 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:55,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:55,516 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 [2018-10-04 09:52:55,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:55,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:55,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:55,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:55,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:55,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:52:55,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:52:55,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:52:55,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:55,627 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 09:52:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:55,703 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:52:55,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:52:55,704 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 09:52:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:55,704 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:52:55,704 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:52:55,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 14 [2018-10-04 09:52:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:52:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:52:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:52:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:52:55,709 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 09:52:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:55,709 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:52:55,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:52:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:52:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:52:55,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:55,711 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 09:52:55,711 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:55,711 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-04 09:52:55,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:55,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:55,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:55,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:55,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:55,956 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:56,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:56,053 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 [2018-10-04 09:52:56,061 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:52:56,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 09:52:56,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:56,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:56,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:56,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:52:56,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:52:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:52:56,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:56,231 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 09:52:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:56,267 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 09:52:56,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:52:56,267 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 09:52:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:56,268 INFO L225 Difference]: With dead ends: 34 [2018-10-04 09:52:56,268 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 09:52:56,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 09:52:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 09:52:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 09:52:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 09:52:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 09:52:56,273 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 09:52:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:56,273 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 09:52:56,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:52:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 09:52:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 09:52:56,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:56,274 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 09:52:56,274 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:56,275 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:56,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-04 09:52:56,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:56,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:56,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:56,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:56,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:56,578 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:56,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:56,800 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 [2018-10-04 09:52:56,809 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:52:56,850 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:52:56,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:56,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:56,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:56,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:52:56,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:52:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:52:56,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:56,961 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 09:52:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:57,016 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 09:52:57,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:52:57,017 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 09:52:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:57,017 INFO L225 Difference]: With dead ends: 35 [2018-10-04 09:52:57,017 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 09:52:57,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 16 [2018-10-04 09:52:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 09:52:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 09:52:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 09:52:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 09:52:57,021 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 09:52:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:57,021 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 09:52:57,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:52:57,022 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 09:52:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 09:52:57,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:57,022 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 09:52:57,022 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:57,022 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:57,023 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-04 09:52:57,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:57,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:57,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:57,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:57,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:57,275 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:57,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:57,483 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 [2018-10-04 09:52:57,491 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:52:57,514 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 09:52:57,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:57,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:57,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:57,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:52:57,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:52:57,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:52:57,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:57,597 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 09:52:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:57,644 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 09:52:57,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:52:57,644 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 09:52:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:57,645 INFO L225 Difference]: With dead ends: 36 [2018-10-04 09:52:57,645 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 09:52:57,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 17 [2018-10-04 09:52:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 09:52:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 09:52:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 09:52:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 09:52:57,649 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 09:52:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:57,649 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 09:52:57,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:52:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 09:52:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 09:52:57,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:57,650 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 09:52:57,650 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:57,650 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-04 09:52:57,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:57,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:57,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:57,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:57,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:57,894 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:58,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:58,124 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 [2018-10-04 09:52:58,134 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:52:58,159 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 09:52:58,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:58,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:58,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:58,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:52:58,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:52:58,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:52:58,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:58,308 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 09:52:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:58,358 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:52:58,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:52:58,358 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 09:52:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:58,358 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:52:58,359 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:52:58,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 18 [2018-10-04 09:52:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:52:58,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:52:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:52:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:52:58,362 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 09:52:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:58,362 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:52:58,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:52:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:52:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:52:58,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:58,363 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 09:52:58,364 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:58,364 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-04 09:52:58,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:58,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:58,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:58,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:58,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:58,801 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:59,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:59,089 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 [2018-10-04 09:52:59,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:59,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:59,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:59,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:52:59,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:52:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:52:59,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:59,201 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 09:52:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:59,278 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 09:52:59,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:52:59,279 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 09:52:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:59,280 INFO L225 Difference]: With dead ends: 38 [2018-10-04 09:52:59,280 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 09:52:59,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 19 [2018-10-04 09:52:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 09:52:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 09:52:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 09:52:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 09:52:59,285 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 09:52:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:59,285 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 09:52:59,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:52:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 09:52:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 09:52:59,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:59,286 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 09:52:59,286 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:59,287 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:59,287 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-04 09:52:59,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:59,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:59,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:59,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:52:59,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:52:59,583 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:52:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:59,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:52:59,762 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 [2018-10-04 09:52:59,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:52:59,800 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:52:59,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:52:59,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:52:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:52:59,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:52:59,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:52:59,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:52:59,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:52:59,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:52:59,920 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 09:52:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:52:59,961 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 09:52:59,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:52:59,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 09:52:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:52:59,962 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:52:59,962 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 09:52:59,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 20 [2018-10-04 09:52:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 09:52:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 09:52:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 09:52:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 09:52:59,967 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 09:52:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:52:59,967 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 09:52:59,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:52:59,967 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 09:52:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 09:52:59,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:52:59,968 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 09:52:59,968 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:52:59,968 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:52:59,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-04 09:52:59,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:52:59,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:52:59,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:59,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:52:59,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:52:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:00,264 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:00,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:00,639 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 [2018-10-04 09:53:00,647 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:00,683 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 09:53:00,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:00,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:00,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:00,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:53:00,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:53:00,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:53:00,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:00,819 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 09:53:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:00,876 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 09:53:00,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:53:00,877 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 09:53:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:00,877 INFO L225 Difference]: With dead ends: 40 [2018-10-04 09:53:00,878 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 09:53:00,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 21 [2018-10-04 09:53:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 09:53:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 09:53:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 09:53:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 09:53:00,881 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 09:53:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:00,881 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 09:53:00,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:53:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 09:53:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 09:53:00,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:00,882 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 09:53:00,882 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:00,882 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-04 09:53:00,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:00,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:00,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:00,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:00,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:01,156 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:01,338 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:01,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:01,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:01,349 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:01,389 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:01,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:01,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:01,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:01,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:53:01,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:53:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:53:01,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:01,510 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 09:53:01,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:01,554 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:53:01,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:53:01,555 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 09:53:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:01,555 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:53:01,556 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:53:01,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 7 [2018-10-04 09:53:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:53:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:53:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:53:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:53:01,559 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 09:53:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:01,559 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:53:01,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:53:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:53:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:53:01,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:01,560 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 09:53:01,560 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:01,561 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:01,561 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-04 09:53:01,561 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:01,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:01,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:01,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:01,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:01,907 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:02,315 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:02,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:02,351 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 [2018-10-04 09:53:02,359 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:02,387 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 09:53:02,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:02,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:02,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:02,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:53:02,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:53:02,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:53:02,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:02,531 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 09:53:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:02,609 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 09:53:02,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:53:02,609 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 09:53:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:02,610 INFO L225 Difference]: With dead ends: 42 [2018-10-04 09:53:02,610 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 09:53:02,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 8 [2018-10-04 09:53:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 09:53:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 09:53:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 09:53:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 09:53:02,613 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 09:53:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:02,614 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 09:53:02,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:53:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 09:53:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 09:53:02,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:02,615 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 09:53:02,615 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:02,615 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:02,615 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-04 09:53:02,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:02,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:02,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:02,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:02,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:02,887 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:03,309 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:03,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:03,493 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 [2018-10-04 09:53:03,502 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:03,542 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:53:03,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:03,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:04,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:04,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:53:04,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:53:04,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:53:04,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:04,566 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 09:53:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:04,722 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 09:53:04,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:53:04,723 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 09:53:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:04,723 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:53:04,723 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 09:53:04,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.6s impTime 9 [2018-10-04 09:53:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 09:53:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 09:53:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 09:53:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 09:53:04,727 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 09:53:04,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:04,727 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 09:53:04,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:53:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 09:53:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 09:53:04,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:04,728 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 09:53:04,728 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:04,728 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:04,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-04 09:53:04,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:04,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:04,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:04,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:04,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:04,920 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:05,331 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:05,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:05,435 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 [2018-10-04 09:53:05,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:05,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:05,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:05,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:53:05,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:53:05,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:53:05,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:05,635 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 09:53:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:05,749 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 09:53:05,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:53:05,749 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 09:53:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:05,750 INFO L225 Difference]: With dead ends: 44 [2018-10-04 09:53:05,750 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 09:53:05,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 10 [2018-10-04 09:53:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 09:53:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 09:53:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 09:53:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 09:53:05,754 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 09:53:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:05,754 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 09:53:05,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:53:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 09:53:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 09:53:05,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:05,755 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 09:53:05,755 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:05,755 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-04 09:53:05,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:05,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:05,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:05,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:05,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:06,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:06,453 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:06,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:06,511 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 [2018-10-04 09:53:06,529 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:06,554 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:06,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:06,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:06,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:06,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:53:06,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:53:06,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:53:06,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:06,654 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 09:53:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:06,744 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:53:06,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:53:06,745 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 09:53:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:06,745 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:53:06,746 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:53:06,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 11 [2018-10-04 09:53:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:53:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:53:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:53:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:53:06,749 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 09:53:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:06,750 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:53:06,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:53:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:53:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:53:06,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:06,750 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 09:53:06,750 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:06,751 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:06,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-04 09:53:06,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:06,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:06,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:06,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:06,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:06,979 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:07,507 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:07,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:07,675 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 [2018-10-04 09:53:07,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:07,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 09:53:07,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:07,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:07,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:07,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:53:07,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:53:07,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:53:07,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:07,815 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 09:53:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:07,883 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 09:53:07,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:53:07,884 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 09:53:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:07,884 INFO L225 Difference]: With dead ends: 46 [2018-10-04 09:53:07,885 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 09:53:07,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 12 [2018-10-04 09:53:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 09:53:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 09:53:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 09:53:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 09:53:07,888 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 09:53:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:07,888 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 09:53:07,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:53:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 09:53:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 09:53:07,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:07,889 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 09:53:07,889 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:07,889 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:07,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-04 09:53:07,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:07,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:07,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:07,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:07,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:08,138 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:09,004 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:09,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:09,180 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 [2018-10-04 09:53:09,188 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:09,211 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:09,211 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:09,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:09,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:09,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:53:09,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:53:09,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:53:09,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:09,330 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 09:53:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:09,401 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 09:53:09,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:53:09,402 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 09:53:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:09,403 INFO L225 Difference]: With dead ends: 47 [2018-10-04 09:53:09,403 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 09:53:09,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 13 [2018-10-04 09:53:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 09:53:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 09:53:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 09:53:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 09:53:09,406 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 09:53:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:09,406 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 09:53:09,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:53:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 09:53:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 09:53:09,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:09,407 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 09:53:09,407 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:09,407 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:09,407 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-04 09:53:09,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:09,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:09,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:09,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:09,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:09,819 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:10,190 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:10,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:10,453 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 [2018-10-04 09:53:10,460 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:10,494 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 09:53:10,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:10,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:10,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:10,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:53:10,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:53:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:53:10,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:10,593 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 09:53:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:10,747 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 09:53:10,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:53:10,747 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 09:53:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:10,748 INFO L225 Difference]: With dead ends: 48 [2018-10-04 09:53:10,748 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 09:53:10,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 14 [2018-10-04 09:53:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 09:53:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 09:53:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 09:53:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 09:53:10,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 09:53:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:10,751 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 09:53:10,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:53:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 09:53:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 09:53:10,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:10,751 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 09:53:10,751 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:10,752 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:10,752 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-04 09:53:10,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:10,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:10,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:10,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:10,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:11,082 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:11,504 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:11,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:11,792 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 [2018-10-04 09:53:11,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:11,828 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 09:53:11,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:11,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:11,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:11,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:53:11,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:53:11,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:53:11,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:11,950 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 09:53:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:12,022 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:53:12,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:53:12,023 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 09:53:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:12,024 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:53:12,024 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:53:12,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 15 [2018-10-04 09:53:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:53:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:53:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:53:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:53:12,027 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 09:53:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:12,027 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:53:12,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:53:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:53:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:53:12,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:12,028 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 09:53:12,028 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:12,028 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-04 09:53:12,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:12,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:12,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:12,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:12,310 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:13,224 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:13,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:13,561 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 [2018-10-04 09:53:13,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:13,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:13,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:13,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:53:13,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:53:13,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:53:13,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:13,703 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 09:53:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:13,862 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 09:53:13,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:53:13,863 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 09:53:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:13,863 INFO L225 Difference]: With dead ends: 50 [2018-10-04 09:53:13,863 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 09:53:13,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 16 [2018-10-04 09:53:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 09:53:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 09:53:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 09:53:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 09:53:13,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 09:53:13,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:13,865 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 09:53:13,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:53:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 09:53:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 09:53:13,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:13,866 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 09:53:13,866 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:13,866 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-04 09:53:13,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:13,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:13,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:13,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:13,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:14,230 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:14,604 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:14,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:14,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:14,975 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:14,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:14,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:14,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:15,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:15,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:53:15,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:53:15,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:53:15,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:15,098 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 09:53:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:15,173 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 09:53:15,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:53:15,173 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 09:53:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:15,174 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:53:15,174 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 09:53:15,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.9s impTime 17 [2018-10-04 09:53:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 09:53:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 09:53:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 09:53:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 09:53:15,178 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 09:53:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:15,178 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 09:53:15,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:53:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 09:53:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 09:53:15,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:15,179 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 09:53:15,179 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:15,179 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-04 09:53:15,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:15,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:15,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:15,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:15,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:15,471 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:16,143 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:16,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:16,256 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 [2018-10-04 09:53:16,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:16,300 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 09:53:16,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:16,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:16,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:16,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:53:16,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:53:16,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:53:16,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:16,428 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 09:53:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:16,875 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 09:53:16,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:53:16,876 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 09:53:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:16,876 INFO L225 Difference]: With dead ends: 52 [2018-10-04 09:53:16,876 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 09:53:16,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 18 [2018-10-04 09:53:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 09:53:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 09:53:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 09:53:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 09:53:16,878 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 09:53:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:16,878 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 09:53:16,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:53:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 09:53:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 09:53:16,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:16,879 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 09:53:16,879 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:16,879 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-04 09:53:16,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:16,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:16,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:16,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:16,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:17,233 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:17,627 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:18,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:18,057 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 [2018-10-04 09:53:18,065 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:18,092 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:18,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:18,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:18,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:18,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:53:18,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:53:18,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:53:18,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:18,214 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 09:53:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:18,291 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:53:18,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:53:18,291 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 09:53:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:18,292 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:53:18,292 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:53:18,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 19 [2018-10-04 09:53:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:53:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:53:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:53:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:53:18,295 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 09:53:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:18,295 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:53:18,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:53:18,295 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:53:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:53:18,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:18,296 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 09:53:18,296 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:18,296 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-04 09:53:18,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:18,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:18,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:18,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:18,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:18,683 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:18,956 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:19,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:19,339 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 [2018-10-04 09:53:19,347 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:19,383 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 09:53:19,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:19,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:19,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:19,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:53:19,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:53:19,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:53:19,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:19,500 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 09:53:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:19,586 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 09:53:19,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:53:19,593 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 09:53:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:19,593 INFO L225 Difference]: With dead ends: 54 [2018-10-04 09:53:19,593 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 09:53:19,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 20 [2018-10-04 09:53:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 09:53:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 09:53:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 09:53:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 09:53:19,597 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 09:53:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:19,597 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 09:53:19,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:53:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 09:53:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 09:53:19,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:19,598 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 09:53:19,598 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:19,598 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-04 09:53:19,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:19,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:19,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:19,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:19,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:19,798 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:20,219 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:20,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:20,445 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 [2018-10-04 09:53:20,452 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:20,488 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:53:20,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:20,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:20,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:20,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:53:20,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:53:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:53:20,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:20,602 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 09:53:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:20,660 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 09:53:20,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:53:20,661 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 09:53:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:20,662 INFO L225 Difference]: With dead ends: 55 [2018-10-04 09:53:20,662 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 09:53:20,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 21 [2018-10-04 09:53:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 09:53:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 09:53:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 09:53:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 09:53:20,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 09:53:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:20,666 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 09:53:20,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:53:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 09:53:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 09:53:20,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:20,667 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 09:53:20,667 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:20,667 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-04 09:53:20,667 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:20,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:20,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:20,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:20,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:21,433 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:21,821 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:22,206 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:22,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:22,212 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 [2018-10-04 09:53:22,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:22,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:22,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:22,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:53:22,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:53:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:53:22,356 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:22,356 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 09:53:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:22,416 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 09:53:22,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:53:22,417 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 09:53:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:22,417 INFO L225 Difference]: With dead ends: 56 [2018-10-04 09:53:22,418 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 09:53:22,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 7 [2018-10-04 09:53:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 09:53:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 09:53:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 09:53:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 09:53:22,421 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 09:53:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:22,421 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 09:53:22,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:53:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 09:53:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 09:53:22,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:22,421 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 09:53:22,421 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:22,422 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:22,422 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-04 09:53:22,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:22,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:22,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:22,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:22,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:22,610 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:23,014 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:23,237 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:23,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:23,255 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 [2018-10-04 09:53:23,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:23,294 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:23,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:23,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:23,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:23,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:53:23,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:53:23,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:53:23,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:23,428 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 09:53:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:23,515 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:53:23,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:53:23,515 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 09:53:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:23,516 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:53:23,516 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:53:23,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 8 [2018-10-04 09:53:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:53:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:53:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:53:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:53:23,519 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 09:53:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:23,519 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:53:23,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:53:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:53:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:53:23,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:23,520 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 09:53:23,520 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:23,520 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-04 09:53:23,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:23,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:23,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:23,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:23,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:23,745 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:23,927 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:24,537 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:24,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:24,596 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 [2018-10-04 09:53:24,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:24,791 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 09:53:24,792 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:24,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:24,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:24,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:53:24,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:53:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:53:24,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:24,959 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 09:53:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:25,032 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 09:53:25,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:53:25,033 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 09:53:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:25,034 INFO L225 Difference]: With dead ends: 58 [2018-10-04 09:53:25,034 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 09:53:25,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 9 [2018-10-04 09:53:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 09:53:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 09:53:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 09:53:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 09:53:25,036 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 09:53:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:25,036 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 09:53:25,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:53:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 09:53:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 09:53:25,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:25,037 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 09:53:25,037 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:25,037 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-04 09:53:25,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:25,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:25,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:25,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:25,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:25,295 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:25,713 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:26,343 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:26,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:26,506 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 [2018-10-04 09:53:26,513 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:26,546 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:26,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:26,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:26,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:26,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:53:26,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:53:26,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:53:26,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:26,698 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 09:53:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:26,787 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 09:53:26,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:53:26,787 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 09:53:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:26,788 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:53:26,788 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 09:53:26,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 10 [2018-10-04 09:53:26,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 09:53:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 09:53:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 09:53:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 09:53:26,792 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 09:53:26,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:26,792 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 09:53:26,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:53:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 09:53:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 09:53:26,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:26,793 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 09:53:26,793 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:26,793 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:26,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-04 09:53:26,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:26,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:26,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:26,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:26,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:27,062 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:27,263 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:27,627 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:27,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:27,815 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 [2018-10-04 09:53:27,824 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:27,868 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 09:53:27,868 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:27,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:28,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:28,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:53:28,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:53:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:53:28,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:28,028 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 09:53:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:28,119 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 09:53:28,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:53:28,119 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 09:53:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:28,120 INFO L225 Difference]: With dead ends: 60 [2018-10-04 09:53:28,120 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 09:53:28,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 11 [2018-10-04 09:53:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 09:53:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 09:53:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 09:53:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 09:53:28,123 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 09:53:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:28,123 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 09:53:28,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:53:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 09:53:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 09:53:28,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:28,123 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 09:53:28,124 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:28,124 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:28,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-04 09:53:28,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:28,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:28,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:28,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:28,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:28,357 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:28,745 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:29,066 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:29,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:29,130 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 [2018-10-04 09:53:29,137 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:29,190 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 09:53:29,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:29,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:29,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:29,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:53:29,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:53:29,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:53:29,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:29,437 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 09:53:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:29,539 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:53:29,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:53:29,539 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 09:53:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:29,540 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:53:29,540 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:53:29,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 12 [2018-10-04 09:53:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:53:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:53:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:53:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:53:29,543 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 09:53:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:29,543 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:53:29,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:53:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:53:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:53:29,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:29,544 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 09:53:29,544 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:29,544 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:29,544 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-04 09:53:29,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:29,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:29,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:29,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:29,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:29,867 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:30,231 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:30,834 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:31,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:31,124 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 [2018-10-04 09:53:31,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:31,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:31,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:31,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:53:31,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:53:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:53:31,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:31,305 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 09:53:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:31,425 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 09:53:31,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:53:31,426 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 09:53:31,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:31,427 INFO L225 Difference]: With dead ends: 62 [2018-10-04 09:53:31,427 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 09:53:31,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 13 [2018-10-04 09:53:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 09:53:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 09:53:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 09:53:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 09:53:31,429 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 09:53:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:31,429 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 09:53:31,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:53:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 09:53:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 09:53:31,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:31,430 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 09:53:31,430 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:31,430 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-04 09:53:31,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:31,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:31,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:31,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:31,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:31,858 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:32,228 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:32,795 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:32,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:32,850 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 [2018-10-04 09:53:32,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:32,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:32,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:32,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:33,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:33,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:53:33,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:53:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:53:33,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:33,206 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 09:53:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:33,279 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 09:53:33,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:53:33,279 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 09:53:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:33,280 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:53:33,280 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 09:53:33,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 14 [2018-10-04 09:53:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 09:53:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 09:53:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 09:53:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 09:53:33,283 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 09:53:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:33,284 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 09:53:33,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:53:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 09:53:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 09:53:33,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:33,284 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 09:53:33,285 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:33,285 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-04 09:53:33,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:33,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:33,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:33,845 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:34,277 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:34,779 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:35,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:35,170 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 [2018-10-04 09:53:35,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:35,225 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 09:53:35,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:35,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:35,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:35,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:53:35,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:53:35,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:53:35,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:35,351 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 09:53:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:35,446 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 09:53:35,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:53:35,446 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 09:53:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:35,447 INFO L225 Difference]: With dead ends: 64 [2018-10-04 09:53:35,447 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 09:53:35,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 15 [2018-10-04 09:53:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 09:53:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 09:53:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 09:53:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 09:53:35,450 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 09:53:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:35,450 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 09:53:35,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:53:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 09:53:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 09:53:35,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:35,451 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 09:53:35,451 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:35,451 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-04 09:53:35,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:35,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:35,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:35,874 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:36,118 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:36,551 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:36,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:36,885 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 [2018-10-04 09:53:36,894 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:36,930 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:36,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:36,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:37,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:37,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:53:37,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:53:37,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:53:37,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:37,073 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 09:53:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:37,163 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:53:37,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:53:37,163 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 09:53:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:37,164 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:53:37,164 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:53:37,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 16 [2018-10-04 09:53:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:53:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:53:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:53:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:53:37,167 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 09:53:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:37,167 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:53:37,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:53:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:53:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:53:37,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:37,168 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 09:53:37,168 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:37,168 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-04 09:53:37,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:37,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:37,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:37,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:37,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:37,384 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:37,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:38,209 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:38,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:38,316 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 [2018-10-04 09:53:38,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:38,370 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 09:53:38,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:38,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:38,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:38,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:53:38,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:53:38,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:53:38,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:38,570 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 09:53:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:38,670 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 09:53:38,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:53:38,670 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 09:53:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:38,671 INFO L225 Difference]: With dead ends: 66 [2018-10-04 09:53:38,671 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 09:53:38,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 17 [2018-10-04 09:53:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 09:53:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 09:53:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 09:53:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 09:53:38,673 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 09:53:38,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:38,673 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 09:53:38,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:53:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 09:53:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 09:53:38,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:38,674 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 09:53:38,674 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:38,674 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-04 09:53:38,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:38,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:38,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:38,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:38,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:40,452 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:40,821 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:41,399 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:41,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:41,942 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 [2018-10-04 09:53:41,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:42,002 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:53:42,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:42,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:42,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:42,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:53:42,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:53:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:53:42,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:42,141 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 09:53:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:42,250 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 09:53:42,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:53:42,250 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 09:53:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:42,251 INFO L225 Difference]: With dead ends: 67 [2018-10-04 09:53:42,251 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 09:53:42,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.7s impTime 18 [2018-10-04 09:53:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 09:53:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 09:53:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 09:53:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 09:53:42,254 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 09:53:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:42,255 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 09:53:42,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:53:42,255 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 09:53:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 09:53:42,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:42,255 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 09:53:42,255 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:42,255 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-04 09:53:42,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:42,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:42,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:42,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:42,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:42,471 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:42,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:43,123 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:43,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:43,727 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 [2018-10-04 09:53:43,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:43,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:43,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:43,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:53:43,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:53:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:53:43,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:43,914 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 09:53:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:44,025 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 09:53:44,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:53:44,025 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 09:53:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:44,026 INFO L225 Difference]: With dead ends: 68 [2018-10-04 09:53:44,026 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 09:53:44,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 19 [2018-10-04 09:53:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 09:53:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 09:53:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 09:53:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 09:53:44,028 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 09:53:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:44,029 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 09:53:44,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:53:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 09:53:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 09:53:44,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:44,029 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 09:53:44,030 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:44,030 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-04 09:53:44,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:44,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:44,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:44,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:44,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:44,961 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:45,144 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:45,567 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:46,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:46,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:46,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:53:46,278 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:53:46,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:46,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:46,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:46,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:53:46,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:53:46,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:53:46,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:46,423 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 09:53:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:46,573 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:53:46,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:53:46,573 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 09:53:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:46,574 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:53:46,574 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:53:46,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 20 [2018-10-04 09:53:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:53:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:53:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:53:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:53:46,576 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 09:53:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:46,576 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:53:46,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:53:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:53:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:53:46,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:46,577 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 09:53:46,577 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:46,577 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-04 09:53:46,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:46,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:46,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:46,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:46,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:46,765 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:47,055 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:47,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:48,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:48,314 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 [2018-10-04 09:53:48,325 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:53:48,434 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 09:53:48,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:48,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:48,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:48,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:53:48,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:53:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:53:48,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:48,570 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 09:53:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:48,731 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 09:53:48,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:53:48,731 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 09:53:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:48,732 INFO L225 Difference]: With dead ends: 70 [2018-10-04 09:53:48,732 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 09:53:48,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime 21 [2018-10-04 09:53:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 09:53:48,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 09:53:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 09:53:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 09:53:48,735 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 09:53:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:48,736 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 09:53:48,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:53:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 09:53:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 09:53:48,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:48,737 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 09:53:48,737 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:48,737 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-04 09:53:48,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:48,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:48,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:49,209 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:49,683 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:50,474 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:50,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:50,825 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 [2018-10-04 09:53:50,840 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:53:50,890 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:53:50,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:50,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:51,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:51,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:53:51,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:53:51,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:53:51,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:51,044 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 09:53:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:51,131 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 09:53:51,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:53:51,131 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 09:53:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:51,132 INFO L225 Difference]: With dead ends: 71 [2018-10-04 09:53:51,132 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 09:53:51,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 22 [2018-10-04 09:53:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 09:53:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 09:53:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 09:53:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 09:53:51,136 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 09:53:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:51,136 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 09:53:51,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:53:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 09:53:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 09:53:51,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:51,136 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 09:53:51,137 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:51,137 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:51,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-04 09:53:51,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:51,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:51,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:51,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:51,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:51,389 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:51,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:51,928 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:52,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:52,379 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 [2018-10-04 09:53:52,387 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:53:52,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 09:53:52,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:52,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:52,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:52,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:53:52,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:53:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:53:52,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:52,609 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 09:53:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:52,828 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 09:53:52,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:53:52,829 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 09:53:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:52,829 INFO L225 Difference]: With dead ends: 72 [2018-10-04 09:53:52,829 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 09:53:52,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 23 [2018-10-04 09:53:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 09:53:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 09:53:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 09:53:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 09:53:52,831 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 09:53:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:52,832 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 09:53:52,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:53:52,832 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 09:53:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 09:53:52,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:52,832 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 09:53:52,832 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:52,832 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:52,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-04 09:53:52,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:52,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:52,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:52,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:52,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:53,034 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:53,447 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:54,072 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:55,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:55,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:53:55,173 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:53:55,229 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 09:53:55,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:53:55,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:56,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:56,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:53:56,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:53:56,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:53:56,863 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:56,863 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 09:53:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:56,980 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:53:56,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:53:56,981 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 09:53:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:56,982 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:53:56,982 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:53:56,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.1s impTime 24 [2018-10-04 09:53:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:53:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:53:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:53:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:53:56,985 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 09:53:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:56,985 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:53:56,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:53:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:53:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:53:56,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:56,986 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 09:53:56,986 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:56,986 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:56,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-04 09:53:56,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:56,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:56,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:56,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:53:56,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:57,182 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:57,526 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:58,070 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:53:59,062 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:53:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:59,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:53:59,069 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 [2018-10-04 09:53:59,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:59,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:53:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:53:59,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:53:59,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:53:59,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:53:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:53:59,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:53:59,255 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 09:53:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:53:59,375 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 09:53:59,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:53:59,376 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 09:53:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:53:59,377 INFO L225 Difference]: With dead ends: 74 [2018-10-04 09:53:59,377 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 09:53:59,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 8 [2018-10-04 09:53:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 09:53:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 09:53:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 09:53:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 09:53:59,379 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 09:53:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:53:59,379 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 09:53:59,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:53:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 09:53:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 09:53:59,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:53:59,380 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 09:53:59,380 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:53:59,381 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:53:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-04 09:53:59,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:53:59,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:53:59,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:59,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:53:59,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:53:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:53:59,586 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:53:59,876 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:00,585 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:01,392 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:01,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:01,450 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 [2018-10-04 09:54:01,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:54:01,496 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:54:01,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:01,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:01,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:01,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:54:01,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:54:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:54:01,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:01,635 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 09:54:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:01,757 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 09:54:01,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:54:01,758 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 09:54:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:01,758 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:54:01,758 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 09:54:01,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.7s impTime 9 [2018-10-04 09:54:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 09:54:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 09:54:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 09:54:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 09:54:01,761 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 09:54:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:01,761 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 09:54:01,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:54:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 09:54:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 09:54:01,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:01,762 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 09:54:01,762 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:01,762 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-04 09:54:01,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:01,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:01,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:01,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:01,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:01,969 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:02,284 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:02,811 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:03,791 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:03,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:03,921 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 [2018-10-04 09:54:03,929 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:54:03,989 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 09:54:03,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:03,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:04,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:04,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:54:04,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:54:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:54:04,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:04,406 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 09:54:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:04,547 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 09:54:04,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:54:04,548 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 09:54:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:04,548 INFO L225 Difference]: With dead ends: 76 [2018-10-04 09:54:04,549 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 09:54:04,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 10 [2018-10-04 09:54:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 09:54:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 09:54:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 09:54:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 09:54:04,552 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 09:54:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:04,552 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 09:54:04,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:54:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 09:54:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 09:54:04,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:04,553 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 09:54:04,553 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:04,553 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-04 09:54:04,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:04,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:04,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:04,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:04,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:04,786 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:05,375 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:05,982 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:06,973 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:07,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:07,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:54:07,171 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:54:07,220 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:54:07,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:07,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:07,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:07,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:54:07,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:54:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:54:07,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:07,390 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 09:54:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:07,567 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:54:07,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:54:07,567 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 09:54:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:07,568 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:54:07,568 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:54:07,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime 11 [2018-10-04 09:54:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:54:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:54:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:54:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:54:07,571 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 09:54:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:07,572 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:54:07,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:54:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:54:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:54:07,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:07,573 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 09:54:07,573 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:07,573 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:07,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-04 09:54:07,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:07,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:07,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:07,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:07,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:07,807 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:08,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:08,372 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:08,861 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:09,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:09,000 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 [2018-10-04 09:54:09,007 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:54:09,076 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 09:54:09,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:09,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:09,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:09,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:54:09,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:54:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:54:09,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:09,434 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 09:54:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:09,536 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 09:54:09,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:54:09,536 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 09:54:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:09,538 INFO L225 Difference]: With dead ends: 78 [2018-10-04 09:54:09,538 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 09:54:09,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 12 [2018-10-04 09:54:09,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 09:54:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 09:54:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 09:54:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 09:54:09,541 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 09:54:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:09,541 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 09:54:09,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:54:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 09:54:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 09:54:09,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:09,542 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 09:54:09,542 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:09,543 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-04 09:54:09,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:09,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:09,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:09,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:09,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:09,870 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:10,385 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:10,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:11,768 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:11,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:11,817 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 [2018-10-04 09:54:11,825 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:54:11,891 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:54:11,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:11,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:12,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:12,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:54:12,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:54:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:54:12,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:12,137 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-04 09:54:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:12,244 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 09:54:12,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:54:12,244 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-04 09:54:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:12,245 INFO L225 Difference]: With dead ends: 79 [2018-10-04 09:54:12,245 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 09:54:12,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 13 [2018-10-04 09:54:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 09:54:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 09:54:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 09:54:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 09:54:12,249 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 09:54:12,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:12,249 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 09:54:12,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:54:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 09:54:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 09:54:12,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:12,250 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 09:54:12,250 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:12,250 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-04 09:54:12,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:12,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:12,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:12,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:12,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:12,843 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:13,015 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:13,424 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:14,416 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:14,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:14,799 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 [2018-10-04 09:54:14,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:14,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:15,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:15,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:54:15,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:54:15,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:54:15,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:15,025 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-04 09:54:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:15,187 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 09:54:15,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:54:15,187 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-04 09:54:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:15,188 INFO L225 Difference]: With dead ends: 80 [2018-10-04 09:54:15,188 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 09:54:15,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 14 [2018-10-04 09:54:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 09:54:15,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 09:54:15,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 09:54:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 09:54:15,190 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 09:54:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:15,191 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 09:54:15,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:54:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 09:54:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 09:54:15,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:15,192 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 09:54:15,192 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:15,192 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:15,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-04 09:54:15,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:15,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:15,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:15,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:15,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:15,589 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:15,887 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:16,189 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:17,205 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:17,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:17,655 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 [2018-10-04 09:54:17,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:54:17,703 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:54:17,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:17,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:17,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:17,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:54:17,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:54:17,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:54:17,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:17,854 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-04 09:54:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:18,007 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:54:18,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:54:18,008 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-04 09:54:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:18,009 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:54:18,009 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:54:18,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 15 [2018-10-04 09:54:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:54:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:54:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:54:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:54:18,012 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 09:54:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:18,012 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:54:18,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:54:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:54:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:54:18,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:18,013 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 09:54:18,013 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:18,014 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-04 09:54:18,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:18,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:18,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:18,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:18,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:18,276 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:18,566 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:18,871 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:19,910 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:20,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:20,486 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 [2018-10-04 09:54:20,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:54:20,576 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 09:54:20,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:20,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:20,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:20,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:54:20,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:54:20,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:54:20,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:20,798 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-04 09:54:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:20,961 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 09:54:20,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:54:20,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-04 09:54:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:20,962 INFO L225 Difference]: With dead ends: 82 [2018-10-04 09:54:20,962 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 09:54:20,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 16 [2018-10-04 09:54:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 09:54:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 09:54:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 09:54:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 09:54:20,964 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 09:54:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:20,964 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 09:54:20,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:54:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 09:54:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 09:54:20,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:20,965 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 09:54:20,965 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:20,965 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-04 09:54:20,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:20,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:20,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:20,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:20,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:21,191 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:21,361 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:21,767 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:22,751 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:23,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:23,335 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 [2018-10-04 09:54:23,343 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:54:23,384 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:54:23,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:23,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:23,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:23,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:54:23,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:54:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:54:23,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:23,537 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-04 09:54:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:24,735 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 09:54:24,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:54:24,736 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-04 09:54:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:24,737 INFO L225 Difference]: With dead ends: 83 [2018-10-04 09:54:24,737 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 09:54:24,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 17 [2018-10-04 09:54:24,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 09:54:24,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 09:54:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 09:54:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 09:54:24,740 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 09:54:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:24,740 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 09:54:24,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:54:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 09:54:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 09:54:24,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:24,741 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 09:54:24,741 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:24,741 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:24,741 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-04 09:54:24,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:24,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:24,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:24,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:24,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:27,044 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:27,468 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:28,068 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:28,842 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:28,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:28,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:54:28,959 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:54:29,029 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 09:54:29,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:29,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:29,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:29,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:54:29,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:54:29,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:54:29,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:29,312 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-04 09:54:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:29,460 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 09:54:29,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:54:29,460 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-04 09:54:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:29,461 INFO L225 Difference]: With dead ends: 84 [2018-10-04 09:54:29,461 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 09:54:29,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.5s impTime 18 [2018-10-04 09:54:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 09:54:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 09:54:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 09:54:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 09:54:29,463 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 09:54:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:29,463 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 09:54:29,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:54:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 09:54:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 09:54:29,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:29,463 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 09:54:29,464 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:29,464 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-04 09:54:29,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:29,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:29,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:29,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:29,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:29,693 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:30,079 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:30,254 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:30,827 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:31,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:31,236 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 [2018-10-04 09:54:31,243 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:54:31,309 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 09:54:31,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:31,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:31,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:31,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:54:31,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:54:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:54:31,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:31,473 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-04 09:54:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:31,640 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:54:31,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:54:31,641 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-04 09:54:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:31,641 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:54:31,642 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:54:31,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 19 [2018-10-04 09:54:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:54:31,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:54:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:54:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:54:31,645 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 09:54:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:31,645 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:54:31,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:54:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:54:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:54:31,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:31,646 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 09:54:31,646 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:31,647 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-04 09:54:31,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:31,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:31,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:31,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:31,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:32,142 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:32,580 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:33,186 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:34,173 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:34,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:34,969 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 [2018-10-04 09:54:34,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:35,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:35,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:35,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:54:35,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:54:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:54:35,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:35,239 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-04 09:54:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:35,447 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 09:54:35,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:54:35,447 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-04 09:54:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:35,448 INFO L225 Difference]: With dead ends: 86 [2018-10-04 09:54:35,448 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 09:54:35,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.8s impTime 20 [2018-10-04 09:54:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 09:54:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 09:54:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 09:54:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 09:54:35,450 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 09:54:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:35,450 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 09:54:35,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:54:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 09:54:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 09:54:35,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:35,451 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 09:54:35,451 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:35,451 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-04 09:54:35,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:35,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:35,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:35,628 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:35,988 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:36,523 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:37,513 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:37,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:37,827 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 [2018-10-04 09:54:37,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:54:37,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:54:37,879 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:37,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:38,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:38,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:54:38,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:54:38,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:54:38,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:38,866 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-04 09:54:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:38,990 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 09:54:38,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:54:38,990 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-04 09:54:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:38,991 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:54:38,991 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 09:54:38,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.0s impTime 21 [2018-10-04 09:54:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 09:54:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 09:54:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 09:54:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 09:54:38,993 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 09:54:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:38,993 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 09:54:38,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:54:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 09:54:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 09:54:38,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:38,994 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 09:54:38,994 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:38,994 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:38,994 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-04 09:54:38,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:38,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:38,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:38,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:38,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:39,398 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:39,659 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:40,112 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:41,048 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:41,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:41,856 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 [2018-10-04 09:54:41,863 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:54:41,938 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 09:54:41,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:41,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:42,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:42,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:54:42,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:54:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:54:42,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:42,107 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-04 09:54:42,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:42,269 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 09:54:42,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:54:42,269 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-04 09:54:42,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:42,270 INFO L225 Difference]: With dead ends: 88 [2018-10-04 09:54:42,270 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 09:54:42,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 22 [2018-10-04 09:54:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 09:54:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 09:54:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 09:54:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 09:54:42,274 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 09:54:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:42,274 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 09:54:42,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:54:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 09:54:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 09:54:42,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:42,274 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 09:54:42,275 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:42,275 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-04 09:54:42,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:42,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:42,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:42,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:42,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:42,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:43,142 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:43,686 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:44,674 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:44,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:44,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:54:44,919 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:54:44,967 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:54:44,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:44,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:45,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:45,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:54:45,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:54:45,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:54:45,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:45,286 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-04 09:54:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:45,734 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:54:45,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:54:45,734 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-04 09:54:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:45,735 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:54:45,735 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:54:45,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 23 [2018-10-04 09:54:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:54:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:54:45,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:54:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:54:45,738 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 09:54:45,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:45,739 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:54:45,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:54:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:54:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:54:45,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:45,739 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 09:54:45,740 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:45,740 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-04 09:54:45,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:45,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:45,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:45,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:45,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:45,982 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:46,409 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:47,016 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:48,005 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:49,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:49,081 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 [2018-10-04 09:54:49,087 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:54:49,162 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 09:54:49,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:49,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:49,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:49,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:54:49,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:54:49,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:54:49,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:49,332 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-04 09:54:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:49,537 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 09:54:49,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:54:49,537 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-04 09:54:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:49,538 INFO L225 Difference]: With dead ends: 90 [2018-10-04 09:54:49,538 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 09:54:49,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime 24 [2018-10-04 09:54:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 09:54:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 09:54:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 09:54:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 09:54:49,543 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 09:54:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:49,543 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 09:54:49,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:54:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 09:54:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 09:54:49,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:49,543 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 09:54:49,544 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:49,544 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-04 09:54:49,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:49,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:49,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:49,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:49,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:49,785 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:50,040 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:50,291 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:50,867 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:51,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:51,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:51,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:54:51,729 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:54:51,805 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:54:51,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:51,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:51,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:51,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:54:51,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:54:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:54:51,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:51,984 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-04 09:54:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:52,332 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 09:54:52,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:54:52,333 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-04 09:54:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:52,333 INFO L225 Difference]: With dead ends: 91 [2018-10-04 09:54:52,333 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 09:54:52,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 8 [2018-10-04 09:54:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 09:54:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 09:54:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 09:54:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 09:54:52,336 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 09:54:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:52,336 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 09:54:52,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:54:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 09:54:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 09:54:52,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:52,337 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 09:54:52,337 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:52,337 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-04 09:54:52,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:52,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:52,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:52,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:52,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:52,592 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:53,015 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:53,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:54,032 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:54,424 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:54,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:54,462 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 [2018-10-04 09:54:54,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:54,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:54,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:54,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:54:54,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:54:54,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:54:54,691 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:54,691 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-04 09:54:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:54,823 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 09:54:54,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:54:54,824 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-04 09:54:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:54,825 INFO L225 Difference]: With dead ends: 92 [2018-10-04 09:54:54,825 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 09:54:54,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 9 [2018-10-04 09:54:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 09:54:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 09:54:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 09:54:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 09:54:54,827 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 09:54:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:54,827 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 09:54:54,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:54:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 09:54:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 09:54:54,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:54,828 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 09:54:54,828 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:54,828 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-04 09:54:54,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:54,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:54,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:54,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:54:54,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:55,012 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:55,302 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:55,805 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:56,947 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:57,506 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:54:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:57,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:54:57,542 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 [2018-10-04 09:54:57,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:54:57,598 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:54:57,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:54:57,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:54:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:54:57,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:54:57,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:54:57,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:54:57,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:54:57,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:54:57,771 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-04 09:54:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:54:57,913 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:54:57,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:54:57,913 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-04 09:54:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:54:57,914 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:54:57,914 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:54:57,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 10 [2018-10-04 09:54:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:54:57,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:54:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:54:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:54:57,918 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 09:54:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:54:57,918 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:54:57,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:54:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:54:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:54:57,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:54:57,919 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 09:54:57,919 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:54:57,919 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:54:57,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-04 09:54:57,919 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:54:57,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:54:57,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:57,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:54:57,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:54:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:54:58,290 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:54:58,468 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:58,894 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:54:59,881 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:00,875 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:00,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:00,905 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 [2018-10-04 09:55:00,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:55:00,992 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 09:55:00,992 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:00,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:01,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:01,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:55:01,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:55:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:55:01,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:01,169 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-04 09:55:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:01,330 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 09:55:01,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:55:01,330 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-04 09:55:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:01,331 INFO L225 Difference]: With dead ends: 94 [2018-10-04 09:55:01,331 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 09:55:01,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 11 [2018-10-04 09:55:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 09:55:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 09:55:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 09:55:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 09:55:01,333 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 09:55:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:01,333 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 09:55:01,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:55:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 09:55:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 09:55:01,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:01,334 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 09:55:01,334 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:01,334 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:01,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-04 09:55:01,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:01,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:01,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:01,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:01,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:01,582 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:01,790 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:02,245 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:03,228 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:04,081 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:04,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:04,126 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 [2018-10-04 09:55:04,133 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:55:04,183 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:55:04,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:04,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:04,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:04,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:55:04,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:55:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:55:04,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:04,365 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-04 09:55:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:04,538 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 09:55:04,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:55:04,538 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-04 09:55:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:04,539 INFO L225 Difference]: With dead ends: 95 [2018-10-04 09:55:04,539 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 09:55:04,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 12 [2018-10-04 09:55:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 09:55:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 09:55:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 09:55:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 09:55:04,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 09:55:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:04,541 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 09:55:04,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:55:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 09:55:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 09:55:04,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:04,542 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 09:55:04,543 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:04,543 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-04 09:55:04,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:04,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:04,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:04,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:04,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:04,743 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:05,110 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:05,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:06,670 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:06,926 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:07,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:07,033 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 [2018-10-04 09:55:07,040 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:55:07,182 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 09:55:07,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:07,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:07,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:07,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:55:07,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:55:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:55:07,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:07,400 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-04 09:55:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:07,543 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 09:55:07,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:55:07,543 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-04 09:55:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:07,544 INFO L225 Difference]: With dead ends: 96 [2018-10-04 09:55:07,544 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 09:55:07,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 13 [2018-10-04 09:55:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 09:55:07,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 09:55:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 09:55:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 09:55:07,549 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 09:55:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:07,550 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 09:55:07,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:55:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 09:55:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 09:55:07,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:07,551 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 09:55:07,551 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:07,551 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-04 09:55:07,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:07,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:07,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:07,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:07,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:07,786 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:08,163 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:08,607 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:08,891 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:09,428 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:09,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:09,664 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 [2018-10-04 09:55:09,672 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:55:09,752 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 09:55:09,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:09,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:09,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:09,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:55:09,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:55:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:55:09,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:09,938 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-04 09:55:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:10,090 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:55:10,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:55:10,090 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-04 09:55:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:10,091 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:55:10,091 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:55:10,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 14 [2018-10-04 09:55:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:55:10,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:55:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:55:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:55:10,095 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 09:55:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:10,095 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:55:10,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:55:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:55:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:55:10,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:10,096 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 09:55:10,096 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:10,097 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-04 09:55:10,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:10,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:10,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:10,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:10,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:10,293 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:10,527 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:10,964 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:11,739 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:12,745 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:13,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:13,215 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 [2018-10-04 09:55:13,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:13,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:13,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:13,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:55:13,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:55:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:55:13,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:13,449 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-04 09:55:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:13,684 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 09:55:13,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:55:13,684 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-04 09:55:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:13,685 INFO L225 Difference]: With dead ends: 98 [2018-10-04 09:55:13,685 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 09:55:13,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 15 [2018-10-04 09:55:13,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 09:55:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 09:55:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 09:55:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 09:55:13,687 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 09:55:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:13,688 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 09:55:13,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:55:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 09:55:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 09:55:13,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:13,688 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 09:55:13,688 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:13,689 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:13,689 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-04 09:55:13,689 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:13,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:13,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:13,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:13,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:13,900 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:14,306 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:14,580 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:15,584 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:16,750 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:17,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:17,344 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 [2018-10-04 09:55:17,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:55:17,401 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:55:17,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:17,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:17,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:17,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:55:17,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:55:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:55:17,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:17,666 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-04 09:55:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:17,904 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 09:55:17,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:55:17,905 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-04 09:55:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:17,906 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:55:17,906 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 09:55:17,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.2s impTime 16 [2018-10-04 09:55:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 09:55:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 09:55:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 09:55:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 09:55:17,908 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 09:55:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:17,908 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 09:55:17,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:55:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 09:55:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 09:55:17,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:17,908 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 09:55:17,909 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:17,909 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:17,909 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-04 09:55:17,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:17,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:17,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:17,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:17,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:18,154 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:18,499 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:18,986 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:19,223 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:19,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:20,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:20,034 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 [2018-10-04 09:55:20,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:55:20,129 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 09:55:20,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:20,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:20,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:20,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:55:20,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:55:20,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:55:20,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:20,327 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-04 09:55:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:20,472 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 09:55:20,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:55:20,472 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-04 09:55:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:20,473 INFO L225 Difference]: With dead ends: 100 [2018-10-04 09:55:20,473 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 09:55:20,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 17 [2018-10-04 09:55:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 09:55:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 09:55:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 09:55:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 09:55:20,475 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 09:55:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:20,475 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 09:55:20,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:55:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 09:55:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 09:55:20,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:20,476 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 09:55:20,476 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:20,476 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-04 09:55:20,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:20,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:20,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:20,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:20,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:20,692 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:21,031 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:21,595 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:22,522 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:23,652 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:24,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:24,398 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 [2018-10-04 09:55:24,409 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:55:24,460 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:55:24,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:24,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:24,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:24,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:55:24,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:55:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:55:24,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:24,649 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-04 09:55:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:24,904 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:55:24,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:55:24,904 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-04 09:55:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:24,905 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:55:24,905 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:55:24,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.5s impTime 18 [2018-10-04 09:55:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:55:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:55:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:55:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:55:24,908 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 09:55:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:24,908 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:55:24,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:55:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:55:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:55:24,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:24,909 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 09:55:24,909 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:24,909 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:24,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-04 09:55:24,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:24,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:24,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:24,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:24,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:25,089 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:25,452 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:25,751 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:26,075 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:26,632 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:27,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:27,107 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 [2018-10-04 09:55:27,115 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:55:27,205 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 09:55:27,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:27,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:27,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:27,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:55:27,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:55:27,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:55:27,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:27,371 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-04 09:55:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:27,531 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 09:55:27,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:55:27,531 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-04 09:55:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:27,532 INFO L225 Difference]: With dead ends: 102 [2018-10-04 09:55:27,532 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 09:55:27,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 19 [2018-10-04 09:55:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 09:55:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 09:55:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 09:55:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 09:55:27,534 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 09:55:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:27,535 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 09:55:27,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:55:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 09:55:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 09:55:27,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:27,536 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 09:55:27,536 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:27,536 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:27,536 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-04 09:55:27,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:27,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:27,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:27,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:27,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:27,769 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:27,955 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:28,296 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:29,216 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:30,337 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:30,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:30,615 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 [2018-10-04 09:55:30,633 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:55:30,717 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:55:30,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:30,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:30,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:30,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:55:30,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:55:30,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:55:30,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:30,905 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-04 09:55:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:31,097 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 09:55:31,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:55:31,097 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-04 09:55:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:31,098 INFO L225 Difference]: With dead ends: 103 [2018-10-04 09:55:31,098 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 09:55:31,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 20 [2018-10-04 09:55:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 09:55:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 09:55:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 09:55:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 09:55:31,100 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 09:55:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:31,101 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 09:55:31,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:55:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 09:55:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 09:55:31,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:31,101 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 09:55:31,102 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:31,102 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:31,102 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-04 09:55:31,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:31,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:31,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:31,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:31,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:31,354 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:31,747 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:32,316 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:33,233 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:34,363 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:35,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:35,344 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 [2018-10-04 09:55:35,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:35,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:35,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:35,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:55:35,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:55:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:55:35,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:35,582 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-04 09:55:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:35,857 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 09:55:35,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:55:35,857 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-04 09:55:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:35,858 INFO L225 Difference]: With dead ends: 104 [2018-10-04 09:55:35,858 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 09:55:35,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.8s impTime 21 [2018-10-04 09:55:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 09:55:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 09:55:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 09:55:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 09:55:35,860 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 09:55:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:35,861 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 09:55:35,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:55:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 09:55:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 09:55:35,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:35,861 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 09:55:35,861 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:35,861 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-04 09:55:35,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:35,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:35,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:35,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:35,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:36,101 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:36,271 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:36,577 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:37,188 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:38,025 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:38,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:38,950 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 [2018-10-04 09:55:38,958 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:55:39,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:55:39,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:39,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:39,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:39,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:55:39,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:55:39,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:55:39,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:39,190 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-04 09:55:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:39,434 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:55:39,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:55:39,435 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-04 09:55:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:39,436 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:55:39,436 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:55:39,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.7s impTime 22 [2018-10-04 09:55:39,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:55:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:55:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:55:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:55:39,439 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 09:55:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:39,439 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:55:39,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:55:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:55:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:55:39,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:39,440 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 09:55:39,440 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:39,440 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-04 09:55:39,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:39,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:39,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:39,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:39,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:39,635 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:40,009 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:40,215 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:40,594 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:41,201 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:42,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:42,056 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 [2018-10-04 09:55:42,062 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:55:42,159 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 09:55:42,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:42,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:42,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:42,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:55:42,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:55:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:55:42,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:42,350 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-04 09:55:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:42,581 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 09:55:42,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:55:42,582 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-04 09:55:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:42,582 INFO L225 Difference]: With dead ends: 106 [2018-10-04 09:55:42,582 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 09:55:42,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 23 [2018-10-04 09:55:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 09:55:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 09:55:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 09:55:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 09:55:42,585 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 09:55:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:42,586 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 09:55:42,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:55:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 09:55:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 09:55:42,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:42,587 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 09:55:42,587 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:42,587 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:42,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-04 09:55:42,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:42,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:42,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:42,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:42,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:42,773 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:43,129 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:43,483 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:43,777 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:44,304 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:45,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:45,199 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 [2018-10-04 09:55:45,206 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:55:45,262 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:55:45,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:45,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:45,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:45,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:55:45,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:55:45,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:55:45,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:45,453 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-04 09:55:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:45,682 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 09:55:45,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:55:45,683 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-04 09:55:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:45,683 INFO L225 Difference]: With dead ends: 107 [2018-10-04 09:55:45,683 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 09:55:45,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 24 [2018-10-04 09:55:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 09:55:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 09:55:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 09:55:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 09:55:45,686 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 09:55:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:45,687 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 09:55:45,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:55:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 09:55:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 09:55:45,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:45,688 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 09:55:45,688 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:45,688 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-04 09:55:45,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:45,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:45,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:45,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:45,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:45,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:46,258 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:46,507 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:46,859 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:47,443 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:48,502 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:48,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:48,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:55:48,523 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:55:48,630 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 09:55:48,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:48,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:48,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:48,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:55:48,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:55:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:55:48,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:48,825 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-04 09:55:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:49,064 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 09:55:49,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:55:49,065 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-04 09:55:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:49,066 INFO L225 Difference]: With dead ends: 108 [2018-10-04 09:55:49,067 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 09:55:49,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 8 [2018-10-04 09:55:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 09:55:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 09:55:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 09:55:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 09:55:49,070 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 09:55:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:49,070 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 09:55:49,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:55:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 09:55:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 09:55:49,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:49,071 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 09:55:49,071 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:49,071 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-04 09:55:49,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:49,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:49,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:49,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:49,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:49,335 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:49,557 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:49,815 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:50,366 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:51,150 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:52,314 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:52,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:52,411 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 [2018-10-04 09:55:52,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:55:52,512 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 09:55:52,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:55:52,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:52,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:52,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:55:52,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:55:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:55:52,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:52,697 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-04 09:55:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:52,980 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:55:52,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:55:52,980 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-04 09:55:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:52,981 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:55:52,981 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:55:52,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.8s impTime 9 [2018-10-04 09:55:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:55:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:55:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:55:52,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:55:52,983 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 09:55:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:52,984 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:55:52,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:55:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:55:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:55:52,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:52,984 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 09:55:52,985 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:52,985 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:52,985 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-04 09:55:52,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:52,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:52,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:52,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:55:52,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:53,236 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:53,609 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:54,164 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:55,055 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:56,144 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:57,489 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:55:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:57,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:55:57,683 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 [2018-10-04 09:55:57,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:57,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:55:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:55:58,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:55:58,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:55:58,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:55:58,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:55:58,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:55:58,002 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-04 09:55:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:55:58,303 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 09:55:58,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:55:58,304 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-04 09:55:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:55:58,304 INFO L225 Difference]: With dead ends: 110 [2018-10-04 09:55:58,304 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 09:55:58,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.2s impTime 10 [2018-10-04 09:55:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 09:55:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 09:55:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 09:55:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 09:55:58,308 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 09:55:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:55:58,308 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 09:55:58,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:55:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 09:55:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 09:55:58,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:55:58,309 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 09:55:58,309 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:55:58,309 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:55:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-04 09:55:58,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:55:58,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:55:58,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:58,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:55:58,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:55:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:55:58,682 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:55:59,001 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:55:59,265 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:00,184 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:01,307 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:02,205 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:02,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:02,243 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 [2018-10-04 09:56:02,250 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:56:02,306 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:56:02,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:02,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:02,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:02,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:56:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:56:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:56:02,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:02,595 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-04 09:56:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:02,817 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 09:56:02,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:56:02,818 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-04 09:56:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:02,818 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:56:02,818 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 09:56:02,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 11 [2018-10-04 09:56:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 09:56:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 09:56:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 09:56:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 09:56:02,820 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 09:56:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:02,820 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 09:56:02,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:56:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 09:56:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 09:56:02,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:02,821 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 09:56:02,821 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:02,821 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-04 09:56:02,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:02,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:02,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:02,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:02,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:03,055 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:03,404 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:03,975 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:04,236 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:04,655 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:05,317 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:05,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:05,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:56:05,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:56:05,620 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 09:56:05,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:05,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:05,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:05,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:56:05,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:56:05,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:56:05,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:05,821 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-04 09:56:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:06,025 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 09:56:06,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:56:06,025 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-04 09:56:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:06,025 INFO L225 Difference]: With dead ends: 112 [2018-10-04 09:56:06,025 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 09:56:06,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 12 [2018-10-04 09:56:06,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 09:56:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 09:56:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 09:56:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 09:56:06,028 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 09:56:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:06,028 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 09:56:06,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:56:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 09:56:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 09:56:06,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:06,029 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 09:56:06,029 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:06,029 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:06,029 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-04 09:56:06,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:06,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:06,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:06,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:06,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:06,307 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:06,700 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:07,264 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:08,186 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:09,307 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:10,675 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:11,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:11,115 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 [2018-10-04 09:56:11,123 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:56:11,182 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:56:11,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:11,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:11,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:11,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:56:11,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:56:11,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:56:11,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:11,381 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-04 09:56:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:11,717 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:56:11,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:56:11,718 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-04 09:56:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:11,718 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:56:11,718 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:56:11,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.6s impTime 13 [2018-10-04 09:56:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:56:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:56:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:56:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:56:11,721 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-04 09:56:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:11,722 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:56:11,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:56:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:56:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:56:11,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:11,723 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-04 09:56:11,723 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:11,723 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:11,723 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-04 09:56:11,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:11,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:11,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:11,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:11,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:11,994 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:12,386 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:12,946 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:13,573 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:13,856 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:14,730 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:15,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:15,270 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 [2018-10-04 09:56:15,278 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:56:15,382 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 09:56:15,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:15,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:15,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:15,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 09:56:15,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 09:56:15,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 09:56:15,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:15,589 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-04 09:56:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:15,859 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-04 09:56:15,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 09:56:15,859 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-04 09:56:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:15,860 INFO L225 Difference]: With dead ends: 114 [2018-10-04 09:56:15,860 INFO L226 Difference]: Without dead ends: 112 [2018-10-04 09:56:15,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 14 [2018-10-04 09:56:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-04 09:56:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-04 09:56:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-04 09:56:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-04 09:56:15,862 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-04 09:56:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:15,862 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-04 09:56:15,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 09:56:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-04 09:56:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-04 09:56:15,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:15,863 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-04 09:56:15,863 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:15,863 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:15,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-04 09:56:15,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:15,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:15,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:15,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:15,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:16,197 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:16,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:17,110 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:18,037 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:19,154 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:20,503 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:21,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:21,124 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 [2018-10-04 09:56:21,131 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:56:21,232 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:56:21,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:21,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:21,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:21,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 09:56:21,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 09:56:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 09:56:21,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:21,436 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-04 09:56:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:21,786 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 09:56:21,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 09:56:21,786 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-04 09:56:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:21,787 INFO L225 Difference]: With dead ends: 115 [2018-10-04 09:56:21,787 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 09:56:21,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.7s impTime 15 [2018-10-04 09:56:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 09:56:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 09:56:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 09:56:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 09:56:21,790 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-04 09:56:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:21,790 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 09:56:21,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 09:56:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 09:56:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 09:56:21,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:21,791 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-04 09:56:21,791 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:21,792 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-04 09:56:21,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:21,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:21,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:21,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:21,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:22,050 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:22,366 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:22,552 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:23,015 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:23,721 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:24,646 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:25,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:25,151 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 [2018-10-04 09:56:25,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:56:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:25,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:25,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:25,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 09:56:25,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 09:56:25,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 09:56:25,422 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:25,422 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-04 09:56:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:25,706 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-04 09:56:25,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 09:56:25,706 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-04 09:56:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:25,707 INFO L225 Difference]: With dead ends: 116 [2018-10-04 09:56:25,707 INFO L226 Difference]: Without dead ends: 114 [2018-10-04 09:56:25,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 16 [2018-10-04 09:56:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-04 09:56:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-04 09:56:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-04 09:56:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-04 09:56:25,709 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-04 09:56:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:25,710 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-04 09:56:25,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 09:56:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-04 09:56:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-04 09:56:25,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:25,710 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-04 09:56:25,711 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:25,711 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-04 09:56:25,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:25,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:25,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:25,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:56:25,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:25,958 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:26,326 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:26,871 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:27,685 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:27,915 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:28,767 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:29,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:29,561 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 [2018-10-04 09:56:29,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:56:29,628 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:56:29,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:29,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:29,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:29,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 09:56:29,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 09:56:29,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 09:56:29,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:29,831 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-04 09:56:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:30,116 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 09:56:30,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 09:56:30,116 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-04 09:56:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:30,117 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:56:30,117 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:56:30,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.3s impTime 17 [2018-10-04 09:56:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:56:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:56:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:56:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 09:56:30,119 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-04 09:56:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:30,120 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 09:56:30,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 09:56:30,120 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 09:56:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:56:30,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:30,121 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-04 09:56:30,121 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:30,122 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-04 09:56:30,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:30,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:30,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:30,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:30,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:30,541 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:30,750 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:31,070 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:31,984 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:33,103 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:33,615 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:56:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:33,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:56:33,789 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 [2018-10-04 09:56:33,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:56:33,911 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-04 09:56:33,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:56:33,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:56:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:56:34,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:56:34,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 09:56:34,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 09:56:34,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 09:56:34,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:56:34,116 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-04 09:56:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:56:34,366 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-04 09:56:34,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 09:56:34,366 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-04 09:56:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:56:34,367 INFO L225 Difference]: With dead ends: 118 [2018-10-04 09:56:34,367 INFO L226 Difference]: Without dead ends: 116 [2018-10-04 09:56:34,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime 18 [2018-10-04 09:56:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-04 09:56:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-04 09:56:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-04 09:56:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-04 09:56:34,370 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-04 09:56:34,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:56:34,370 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-04 09:56:34,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 09:56:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-04 09:56:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-04 09:56:34,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:56:34,371 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-04 09:56:34,371 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:56:34,371 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:56:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-04 09:56:34,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:56:34,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:56:34,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:34,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:56:34,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:56:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:56:34,565 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:56:34,933 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:35,287 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:56:36,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 09:56:37,197 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:56:37,201 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:56:37,201 INFO L202 PluginConnector]: Adding new model Octopussy.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:56:37 BoogieIcfgContainer [2018-10-04 09:56:37,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:56:37,202 INFO L168 Benchmark]: Toolchain (without parser) took 235579.65 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -140.0 MB). Free memory was 1.5 GB in the beginning and 966.3 MB in the end (delta: 488.9 MB). Peak memory consumption was 348.9 MB. Max. memory is 7.1 GB. [2018-10-04 09:56:37,204 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:56:37,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.26 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. [2018-10-04 09:56:37,204 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 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. [2018-10-04 09:56:37,205 INFO L168 Benchmark]: RCFGBuilder took 261.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:56:37,205 INFO L168 Benchmark]: TraceAbstraction took 235253.19 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -140.0 MB). Free memory was 1.4 GB in the beginning and 966.3 MB in the end (delta: 467.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. [2018-10-04 09:56:37,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.26 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 18.88 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. * RCFGBuilder took 261.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235253.19 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -140.0 MB). Free memory was 1.4 GB in the beginning and 966.3 MB in the end (delta: 467.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 26). Cancelled while BasicCegarLoop was analyzing trace of length 116 with TraceHistMax 112, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 114 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 113 OverallIterations, 112 TraceHistogramMax, 16.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 338 SDtfs, 2 SDslu, 4484 SDs, 0 SdLazy, 10924 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12878 GetRequests, 6550 SyntacticMatches, 0 SemanticMatches, 6328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 188.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=112, 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: 0.3s AutomataMinimizationTime, 112 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 204.0s InterpolantComputationTime, 13101 NumberOfCodeBlocks, 13101 NumberOfCodeBlocksAsserted, 1837 NumberOfCheckSat, 12878 ConstructedInterpolants, 0 QuantifiedInterpolants, 2898440 SizeOfPredicates, 111 NumberOfNonLiveVariables, 25863 ConjunctsInSsa, 6438 ConjunctsInUnsatCore, 223 InterpolantComputations, 1 PerfectInterpolantSequences, 0/468272 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/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-56-37-218.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Octopussy.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-56-37-218.csv Completed graceful shutdown