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/LuxembourgOctopus.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 01:08:55,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:08:55,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:08:55,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 01:08:55,251 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 [2018-10-01 01:08:55,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:08:55,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:08:55,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:08:55,268 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:08:55,270 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:08:55,270 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:08:55,270 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:08:55,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:08:55,270 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:08:55,271 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:08:55,271 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:08:55,271 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:08:55,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:08:55,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:08:55,272 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:08:55,273 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:08:55,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:08:55,273 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:08:55,273 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:08:55,273 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:08:55,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:08:55,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:08:55,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:08:55,274 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:08:55,274 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:08:55,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:08:55,275 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:08:55,275 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:08:55,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:08:55,275 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:08:55,277 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:08:55,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:08:55,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:08:55,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:08:55,355 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:08:55,356 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:08:55,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl [2018-10-01 01:08:55,357 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl' [2018-10-01 01:08:55,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:08:55,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:08:55,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:08:55,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:08:55,412 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:08:55,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,453 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:08:55,454 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:08:55,454 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:08:55,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:08:55,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:08:55,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:08:55,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:08:55,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/1) ... [2018-10-01 01:08:55,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:08:55,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:08:55,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:08:55,483 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:08:55,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (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 [2018-10-01 01:08:55,554 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-01 01:08:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:08:55,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:08:55,785 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:08:55,786 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:08:55 BoogieIcfgContainer [2018-10-01 01:08:55,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:08:55,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:08:55,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:08:55,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:08:55,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:08:55" (1/2) ... [2018-10-01 01:08:55,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f74738 and model type LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:08:55, skipping insertion in model container [2018-10-01 01:08:55,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:08:55" (2/2) ... [2018-10-01 01:08:55,801 INFO L112 eAbstractionObserver]: Analyzing ICFG LuxembourgOctopus.bpl [2018-10-01 01:08:55,809 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:08:55,820 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:08:55,870 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:08:55,871 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:08:55,871 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:08:55,872 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:08:55,872 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:08:55,872 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:08:55,872 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:08:55,872 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:08:55,873 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:08:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-01 01:08:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-01 01:08:55,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:55,895 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-01 01:08:55,896 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:55,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:55,903 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-01 01:08:55,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:55,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:55,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:55,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,062 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:08:56,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 01:08:56,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:08:56,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:08:56,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:56,083 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-01 01:08:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:56,276 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-01 01:08:56,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:08:56,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-01 01:08:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:56,288 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:08:56,288 INFO L226 Difference]: Without dead ends: 5 [2018-10-01 01:08:56,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-01 01:08:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-01 01:08:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-01 01:08:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-01 01:08:56,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-01 01:08:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:56,327 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-01 01:08:56,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:08:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-01 01:08:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 01:08:56,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:56,328 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 01:08:56,328 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:56,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-01 01:08:56,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:56,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:56,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:56,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:56,416 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 [2018-10-01 01:08:56,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:56,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-10-01 01:08:56,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 01:08:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 01:08:56,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:56,581 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-10-01 01:08:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:56,799 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-01 01:08:56,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:08:56,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-10-01 01:08:56,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:56,802 INFO L225 Difference]: With dead ends: 8 [2018-10-01 01:08:56,802 INFO L226 Difference]: Without dead ends: 6 [2018-10-01 01:08:56,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-01 01:08:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-01 01:08:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-01 01:08:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-01 01:08:56,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-01 01:08:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:56,810 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-01 01:08:56,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 01:08:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-01 01:08:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-01 01:08:56,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:56,811 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-01 01:08:56,813 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:56,813 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:56,813 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-01 01:08:56,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:56,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:56,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:56,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:56,894 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 [2018-10-01 01:08:56,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:56,931 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:56,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:56,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:56,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-01 01:08:56,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:08:56,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:08:56,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:56,977 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-01 01:08:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:57,199 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-01 01:08:57,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:08:57,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-01 01:08:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:57,200 INFO L225 Difference]: With dead ends: 9 [2018-10-01 01:08:57,201 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 01:08:57,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:08:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 01:08:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 01:08:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 01:08:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 01:08:57,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-01 01:08:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:57,205 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 01:08:57,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:08:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 01:08:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 01:08:57,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:57,208 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-01 01:08:57,211 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:57,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-01 01:08:57,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:57,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:57,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:57,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:57,405 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 [2018-10-01 01:08:57,413 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:57,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 01:08:57,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:57,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:57,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-10-01 01:08:57,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 01:08:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 01:08:57,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:57,498 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-10-01 01:08:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:57,588 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-01 01:08:57,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:08:57,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-10-01 01:08:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:57,590 INFO L225 Difference]: With dead ends: 10 [2018-10-01 01:08:57,590 INFO L226 Difference]: Without dead ends: 8 [2018-10-01 01:08:57,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-01 01:08:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-01 01:08:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-01 01:08:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-01 01:08:57,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-01 01:08:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:57,594 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-01 01:08:57,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 01:08:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-01 01:08:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 01:08:57,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:57,595 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-01 01:08:57,595 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:57,595 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-01 01:08:57,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:57,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:57,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:57,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:57,754 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 [2018-10-01 01:08:57,761 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:57,782 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:57,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:57,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:57,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:57,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-01 01:08:57,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:08:57,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:08:57,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:57,849 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-01 01:08:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:57,915 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 01:08:57,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:08:57,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-01 01:08:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:57,916 INFO L225 Difference]: With dead ends: 11 [2018-10-01 01:08:57,916 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 01:08:57,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 01:08:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 01:08:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 01:08:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 01:08:57,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-01 01:08:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:57,921 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 01:08:57,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:08:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 01:08:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 01:08:57,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:57,922 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-01 01:08:57,922 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:57,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-01 01:08:57,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:57,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:57,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:57,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:58,034 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:08:58,041 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:58,053 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 01:08:58,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:58,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,283 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:58,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-01 01:08:58,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 01:08:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 01:08:58,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:58,286 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-10-01 01:08:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:58,562 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-01 01:08:58,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:08:58,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-10-01 01:08:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:58,564 INFO L225 Difference]: With dead ends: 12 [2018-10-01 01:08:58,564 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:08:58,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:08:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:08:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:08:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:08:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 01:08:58,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-01 01:08:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:58,568 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 01:08:58,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 01:08:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 01:08:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-01 01:08:58,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:58,569 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-01 01:08:58,569 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:58,569 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-01 01:08:58,570 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:58,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:58,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:58,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:58,682 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 [2018-10-01 01:08:58,698 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:58,728 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 01:08:58,729 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:58,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:58,821 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:58,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-10-01 01:08:58,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:08:58,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:08:58,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:58,823 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-01 01:08:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:58,945 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 01:08:58,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:08:58,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-01 01:08:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:58,946 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:08:58,947 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 01:08:58,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 01:08:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 01:08:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 01:08:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 01:08:58,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-01 01:08:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:58,951 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 01:08:58,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:08:58,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 01:08:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 01:08:58,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:58,952 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-01 01:08:58,952 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:58,952 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-01 01:08:58,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:58,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:58,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:58,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,096 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 [2018-10-01 01:08:59,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:59,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-10-01 01:08:59,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:08:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:08:59,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:59,190 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2018-10-01 01:08:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:59,271 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-01 01:08:59,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:08:59,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2018-10-01 01:08:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:59,276 INFO L225 Difference]: With dead ends: 14 [2018-10-01 01:08:59,276 INFO L226 Difference]: Without dead ends: 12 [2018-10-01 01:08:59,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:59,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-01 01:08:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-01 01:08:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-01 01:08:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-01 01:08:59,280 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-01 01:08:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:59,280 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-01 01:08:59,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:08:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-01 01:08:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-01 01:08:59,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:59,281 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-01 01:08:59,281 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:59,281 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-01 01:08:59,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:59,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,433 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 [2018-10-01 01:08:59,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:59,449 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:59,449 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:59,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:59,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-10-01 01:08:59,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:08:59,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:08:59,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:59,561 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-01 01:08:59,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:59,666 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 01:08:59,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:08:59,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-01 01:08:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:59,668 INFO L225 Difference]: With dead ends: 15 [2018-10-01 01:08:59,668 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 01:08:59,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:08:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 01:08:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 01:08:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 01:08:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 01:08:59,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-01 01:08:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:59,672 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 01:08:59,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:08:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 01:08:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 01:08:59,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:59,673 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-01 01:08:59,673 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:59,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-01 01:08:59,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:59,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:59,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:59,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:59,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:08:59,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:59,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 01:08:59,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:59,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:59,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:59,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-10-01 01:08:59,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 01:08:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 01:08:59,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:59,976 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-10-01 01:09:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:00,199 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-01 01:09:00,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:09:00,199 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-01 01:09:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:00,200 INFO L225 Difference]: With dead ends: 16 [2018-10-01 01:09:00,201 INFO L226 Difference]: Without dead ends: 14 [2018-10-01 01:09:00,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-01 01:09:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-01 01:09:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-01 01:09:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-01 01:09:00,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-01 01:09:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:00,206 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-01 01:09:00,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 01:09:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-01 01:09:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 01:09:00,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:00,206 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-01 01:09:00,207 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:00,207 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:00,207 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-01 01:09:00,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:00,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:00,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:00,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:00,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:00,323 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:00,334 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:00,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:00,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,544 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:00,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-10-01 01:09:00,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:09:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:09:00,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:00,546 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-01 01:09:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:00,636 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 01:09:00,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 01:09:00,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-01 01:09:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:00,638 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:09:00,639 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 01:09:00,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 01:09:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 01:09:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 01:09:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 01:09:00,642 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-01 01:09:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:00,643 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 01:09:00,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:09:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 01:09:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 01:09:00,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:00,644 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-01 01:09:00,644 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:00,644 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-01 01:09:00,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:00,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:00,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:00,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,804 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:00,804 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 [2018-10-01 01:09:00,813 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:00,826 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 01:09:00,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:00,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:00,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-10-01 01:09:00,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 01:09:00,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 01:09:00,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:00,961 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-10-01 01:09:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:01,068 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-01 01:09:01,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:09:01,068 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-10-01 01:09:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:01,069 INFO L225 Difference]: With dead ends: 18 [2018-10-01 01:09:01,070 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 01:09:01,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 01:09:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 01:09:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 01:09:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-01 01:09:01,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-01 01:09:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:01,073 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-01 01:09:01,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 01:09:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-01 01:09:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-01 01:09:01,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:01,074 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-01 01:09:01,075 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:01,075 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:01,075 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-01 01:09:01,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:01,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:01,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:01,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:01,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:01,266 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:01,279 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 01:09:01,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:01,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:01,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-10-01 01:09:01,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:09:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:09:01,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:01,384 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-01 01:09:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:01,510 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 01:09:01,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:09:01,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-01 01:09:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:01,512 INFO L225 Difference]: With dead ends: 19 [2018-10-01 01:09:01,512 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 01:09:01,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 01:09:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 01:09:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 01:09:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 01:09:01,517 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-01 01:09:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:01,517 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 01:09:01,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:09:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 01:09:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 01:09:01,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:01,518 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-01 01:09:01,519 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:01,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-01 01:09:01,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:01,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:01,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:01,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:01,684 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 [2018-10-01 01:09:01,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:01,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:01,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:01,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-10-01 01:09:01,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:09:01,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:09:01,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:01,795 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2018-10-01 01:09:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:02,061 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-01 01:09:02,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:09:02,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2018-10-01 01:09:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:02,066 INFO L225 Difference]: With dead ends: 20 [2018-10-01 01:09:02,066 INFO L226 Difference]: Without dead ends: 18 [2018-10-01 01:09:02,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:09:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-01 01:09:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-01 01:09:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-01 01:09:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-01 01:09:02,070 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-01 01:09:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:02,070 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-01 01:09:02,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:09:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-01 01:09:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 01:09:02,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:02,071 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-01 01:09:02,071 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:02,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:02,071 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-01 01:09:02,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:02,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:02,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:02,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:02,265 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 [2018-10-01 01:09:02,273 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:02,283 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:02,283 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:02,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:02,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-10-01 01:09:02,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:09:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:09:02,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:02,368 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-01 01:09:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:02,521 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 01:09:02,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:09:02,521 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-01 01:09:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:02,522 INFO L225 Difference]: With dead ends: 21 [2018-10-01 01:09:02,523 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 01:09:02,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 01:09:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 01:09:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 01:09:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 01:09:02,527 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-01 01:09:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:02,527 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 01:09:02,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:09:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 01:09:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 01:09:02,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:02,528 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-01 01:09:02,529 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:02,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:02,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-01 01:09:02,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:02,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:02,700 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 [2018-10-01 01:09:02,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:02,829 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 01:09:02,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:02,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:03,046 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:03,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-10-01 01:09:03,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 01:09:03,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 01:09:03,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:03,047 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-10-01 01:09:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:03,209 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-01 01:09:03,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:09:03,210 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-10-01 01:09:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:03,210 INFO L225 Difference]: With dead ends: 22 [2018-10-01 01:09:03,211 INFO L226 Difference]: Without dead ends: 20 [2018-10-01 01:09:03,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-01 01:09:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-01 01:09:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 01:09:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-01 01:09:03,215 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-01 01:09:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:03,215 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-01 01:09:03,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 01:09:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-01 01:09:03,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-01 01:09:03,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:03,216 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-01 01:09:03,216 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:03,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:03,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-01 01:09:03,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:03,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:03,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:03,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:03,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:03,332 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 [2018-10-01 01:09:03,340 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:03,372 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:03,373 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:03,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:03,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:03,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2018-10-01 01:09:03,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:09:03,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:09:03,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:03,698 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-01 01:09:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:03,838 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 01:09:03,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:09:03,838 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-01 01:09:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:03,839 INFO L225 Difference]: With dead ends: 23 [2018-10-01 01:09:03,839 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 01:09:03,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 01:09:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 01:09:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 01:09:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 01:09:03,844 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-01 01:09:03,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:03,845 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 01:09:03,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:09:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 01:09:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 01:09:03,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:03,845 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-01 01:09:03,846 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:03,846 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:03,846 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-01 01:09:03,846 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:03,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:03,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:03,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,213 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:04,213 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 [2018-10-01 01:09:04,221 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:04,235 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 01:09:04,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:04,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:04,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-10-01 01:09:04,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 01:09:04,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 01:09:04,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:04,312 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 21 states. [2018-10-01 01:09:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:04,415 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-01 01:09:04,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:09:04,415 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2018-10-01 01:09:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:04,416 INFO L225 Difference]: With dead ends: 24 [2018-10-01 01:09:04,416 INFO L226 Difference]: Without dead ends: 22 [2018-10-01 01:09:04,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-01 01:09:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-01 01:09:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-01 01:09:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-01 01:09:04,422 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-01 01:09:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:04,423 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-01 01:09:04,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 01:09:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-01 01:09:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-01 01:09:04,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:04,424 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-01 01:09:04,424 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:04,424 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:04,424 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-01 01:09:04,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:04,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:04,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:04,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:04,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:04,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:04,911 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:04,941 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 01:09:04,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:04,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:05,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:05,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-10-01 01:09:05,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:09:05,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:09:05,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:05,383 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-01 01:09:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:05,519 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 01:09:05,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:09:05,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-01 01:09:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:05,520 INFO L225 Difference]: With dead ends: 25 [2018-10-01 01:09:05,521 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 01:09:05,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 01:09:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 01:09:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 01:09:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 01:09:05,525 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-01 01:09:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:05,525 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 01:09:05,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:09:05,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 01:09:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 01:09:05,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:05,526 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-01 01:09:05,526 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:05,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-01 01:09:05,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:05,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:05,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:05,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:05,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:05,848 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 [2018-10-01 01:09:05,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:05,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:06,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:06,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2018-10-01 01:09:06,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:09:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:09:06,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:06,029 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2018-10-01 01:09:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:06,391 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-01 01:09:06,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:09:06,392 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2018-10-01 01:09:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:06,392 INFO L225 Difference]: With dead ends: 26 [2018-10-01 01:09:06,393 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 01:09:06,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 01:09:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-01 01:09:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-01 01:09:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-01 01:09:06,396 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-01 01:09:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:06,396 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-01 01:09:06,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:09:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-01 01:09:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 01:09:06,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:06,397 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-01 01:09:06,397 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:06,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-01 01:09:06,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:06,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:06,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:06,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:06,641 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:06,641 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 [2018-10-01 01:09:06,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:06,662 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:06,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:06,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:06,751 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:06,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2018-10-01 01:09:06,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:09:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:09:06,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:06,752 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-01 01:09:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:06,920 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 01:09:06,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:09:06,920 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-01 01:09:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:06,921 INFO L225 Difference]: With dead ends: 27 [2018-10-01 01:09:06,922 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 01:09:06,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 01:09:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 01:09:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 01:09:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 01:09:06,925 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-01 01:09:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:06,925 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 01:09:06,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:09:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 01:09:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 01:09:06,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:06,926 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-01 01:09:06,927 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:06,927 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-01 01:09:06,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:06,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:06,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:06,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:07,102 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:07,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:07,129 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 01:09:07,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:07,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:07,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2018-10-01 01:09:07,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 01:09:07,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 01:09:07,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:07,361 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 25 states. [2018-10-01 01:09:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:07,500 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-01 01:09:07,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:09:07,501 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 24 [2018-10-01 01:09:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:07,502 INFO L225 Difference]: With dead ends: 28 [2018-10-01 01:09:07,502 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 01:09:07,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 01:09:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 01:09:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 01:09:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-01 01:09:07,506 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-01 01:09:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:07,506 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-01 01:09:07,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 01:09:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-01 01:09:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-01 01:09:07,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:07,507 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-01 01:09:07,507 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:07,508 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:07,508 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-01 01:09:07,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:07,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:07,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:07,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:07,664 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:07,665 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 [2018-10-01 01:09:07,673 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:07,714 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:07,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:07,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:07,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2018-10-01 01:09:07,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:09:07,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:09:07,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:07,854 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-01 01:09:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:08,025 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 01:09:08,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:09:08,026 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-01 01:09:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:08,026 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:09:08,026 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 01:09:08,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 01:09:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 01:09:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 01:09:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 01:09:08,031 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-01 01:09:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:08,031 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 01:09:08,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:09:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 01:09:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 01:09:08,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:08,032 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-01 01:09:08,032 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:08,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-01 01:09:08,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:08,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:08,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:08,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:08,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:08,229 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:08,251 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 01:09:08,251 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:08,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:08,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:08,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-10-01 01:09:08,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 01:09:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 01:09:08,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:08,361 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 27 states. [2018-10-01 01:09:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:08,554 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-01 01:09:08,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:09:08,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 26 [2018-10-01 01:09:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:08,555 INFO L225 Difference]: With dead ends: 30 [2018-10-01 01:09:08,556 INFO L226 Difference]: Without dead ends: 28 [2018-10-01 01:09:08,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-01 01:09:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-01 01:09:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-01 01:09:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-01 01:09:08,560 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-01 01:09:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:08,560 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-01 01:09:08,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 01:09:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-01 01:09:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 01:09:08,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:08,561 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-01 01:09:08,562 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:08,562 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:08,562 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-01 01:09:08,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:08,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:08,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:08,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:08,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:08,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:08,735 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 [2018-10-01 01:09:08,742 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:08,762 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 01:09:08,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:08,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:08,895 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:08,895 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2018-10-01 01:09:08,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:09:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:09:08,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:08,896 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-01 01:09:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:09,072 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 01:09:09,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:09:09,073 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-01 01:09:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:09,074 INFO L225 Difference]: With dead ends: 31 [2018-10-01 01:09:09,074 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 01:09:09,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 01:09:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 01:09:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 01:09:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 01:09:09,081 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-01 01:09:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:09,081 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 01:09:09,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:09:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 01:09:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 01:09:09,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:09,082 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-01 01:09:09,082 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:09,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-01 01:09:09,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:09,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:09,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:09,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:09,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:09,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:09,846 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 [2018-10-01 01:09:09,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:09,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:09,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:09,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2018-10-01 01:09:09,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:09:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:09:09,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:09,991 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 29 states. [2018-10-01 01:09:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:10,424 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-01 01:09:10,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:09:10,427 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 28 [2018-10-01 01:09:10,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:10,428 INFO L225 Difference]: With dead ends: 32 [2018-10-01 01:09:10,428 INFO L226 Difference]: Without dead ends: 30 [2018-10-01 01:09:10,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-01 01:09:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-01 01:09:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 01:09:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-01 01:09:10,433 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-01 01:09:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:10,433 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-01 01:09:10,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:09:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-01 01:09:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-01 01:09:10,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:10,434 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-01 01:09:10,434 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:10,434 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:10,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-01 01:09:10,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:10,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:10,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:10,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:10,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:10,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:10,768 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 [2018-10-01 01:09:10,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:10,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:10,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:10,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:10,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:10,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2018-10-01 01:09:10,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:09:10,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:09:10,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:10,876 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-01 01:09:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:11,048 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 01:09:11,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:09:11,048 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-01 01:09:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:11,049 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:09:11,049 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 01:09:11,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:11,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 01:09:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 01:09:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 01:09:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 01:09:11,053 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-01 01:09:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:11,053 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 01:09:11,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:09:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 01:09:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 01:09:11,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:11,054 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-01 01:09:11,054 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:11,054 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-01 01:09:11,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:11,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:11,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:11,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:11,283 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 [2018-10-01 01:09:11,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:11,314 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 01:09:11,314 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:11,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:11,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2018-10-01 01:09:11,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 01:09:11,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 01:09:11,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:11,404 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 31 states. [2018-10-01 01:09:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:11,542 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-01 01:09:11,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:09:11,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 30 [2018-10-01 01:09:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:11,544 INFO L225 Difference]: With dead ends: 34 [2018-10-01 01:09:11,544 INFO L226 Difference]: Without dead ends: 32 [2018-10-01 01:09:11,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-01 01:09:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-01 01:09:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-01 01:09:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-01 01:09:11,548 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-01 01:09:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:11,549 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-01 01:09:11,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 01:09:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-01 01:09:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-01 01:09:11,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:11,549 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-01 01:09:11,550 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:11,550 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:11,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-01 01:09:11,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:11,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:11,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:11,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:11,790 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 [2018-10-01 01:09:11,804 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:11,823 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:11,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:11,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,105 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:12,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2018-10-01 01:09:12,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:09:12,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:09:12,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:12,106 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-01 01:09:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:12,292 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 01:09:12,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:09:12,292 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-01 01:09:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:12,293 INFO L225 Difference]: With dead ends: 35 [2018-10-01 01:09:12,293 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 01:09:12,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 01:09:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 01:09:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 01:09:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 01:09:12,298 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-01 01:09:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:12,298 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 01:09:12,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:09:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 01:09:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 01:09:12,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:12,299 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-01 01:09:12,299 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:12,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-01 01:09:12,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:12,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:12,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:12,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:12,557 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 [2018-10-01 01:09:12,565 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:12,590 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 01:09:12,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:12,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:12,683 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2018-10-01 01:09:12,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 01:09:12,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 01:09:12,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:12,684 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2018-10-01 01:09:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:12,902 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-01 01:09:12,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:09:12,902 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2018-10-01 01:09:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:12,903 INFO L225 Difference]: With dead ends: 36 [2018-10-01 01:09:12,903 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 01:09:12,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:09:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 01:09:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-01 01:09:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-01 01:09:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-01 01:09:12,906 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-01 01:09:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:12,906 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-01 01:09:12,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 01:09:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-01 01:09:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 01:09:12,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:12,907 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-01 01:09:12,907 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:12,907 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-01 01:09:12,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:12,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:13,267 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:13,267 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 [2018-10-01 01:09:13,278 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:13,334 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 01:09:13,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:13,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:13,439 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:13,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2018-10-01 01:09:13,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:09:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:09:13,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:13,440 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-01 01:09:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:13,643 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 01:09:13,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:09:13,643 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-01 01:09:13,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:13,644 INFO L225 Difference]: With dead ends: 37 [2018-10-01 01:09:13,644 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 01:09:13,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 01:09:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 01:09:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 01:09:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 01:09:13,648 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-01 01:09:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:13,648 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 01:09:13,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:09:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 01:09:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 01:09:13,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:13,649 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-01 01:09:13,649 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:13,649 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-01 01:09:13,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:13,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:13,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:13,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:13,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:13,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:13,909 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 [2018-10-01 01:09:13,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:13,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:14,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:14,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2018-10-01 01:09:14,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:09:14,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:09:14,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:14,053 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2018-10-01 01:09:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:14,321 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-01 01:09:14,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:09:14,321 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2018-10-01 01:09:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:14,322 INFO L225 Difference]: With dead ends: 38 [2018-10-01 01:09:14,322 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 01:09:14,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 01:09:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 01:09:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 01:09:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-01 01:09:14,327 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-01 01:09:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:14,327 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-01 01:09:14,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:09:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-01 01:09:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-01 01:09:14,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:14,328 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-01 01:09:14,328 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:14,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-01 01:09:14,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:14,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:14,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:14,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:14,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:14,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:14,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:14,834 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:14,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:14,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:14,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:14,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2018-10-01 01:09:14,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:09:14,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:09:14,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:14,958 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-01 01:09:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:15,114 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 01:09:15,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:09:15,115 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-01 01:09:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:15,115 INFO L225 Difference]: With dead ends: 39 [2018-10-01 01:09:15,115 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 01:09:15,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 01:09:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 01:09:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 01:09:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 01:09:15,119 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-01 01:09:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:15,119 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 01:09:15,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:09:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 01:09:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 01:09:15,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:15,120 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-01 01:09:15,120 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:15,120 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-01 01:09:15,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:15,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:15,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:15,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:15,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:15,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:15,458 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 [2018-10-01 01:09:15,466 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:15,499 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 01:09:15,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:15,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:15,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:15,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2018-10-01 01:09:15,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 01:09:15,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 01:09:15,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:15,631 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 37 states. [2018-10-01 01:09:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:15,841 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-01 01:09:15,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:09:15,842 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2018-10-01 01:09:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:15,842 INFO L225 Difference]: With dead ends: 40 [2018-10-01 01:09:15,842 INFO L226 Difference]: Without dead ends: 38 [2018-10-01 01:09:15,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-01 01:09:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-01 01:09:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-01 01:09:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-01 01:09:15,846 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-01 01:09:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:15,846 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-01 01:09:15,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 01:09:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-01 01:09:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 01:09:15,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:15,846 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-01 01:09:15,846 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:15,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:15,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-01 01:09:15,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:15,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:15,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:15,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:15,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:16,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:16,159 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 [2018-10-01 01:09:16,169 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:16,189 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:16,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:16,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:16,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:16,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2018-10-01 01:09:16,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:09:16,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:09:16,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:16,864 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-01 01:09:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:17,065 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 01:09:17,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:09:17,065 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-01 01:09:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:17,066 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:09:17,066 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 01:09:17,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:09:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 01:09:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 01:09:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 01:09:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 01:09:17,070 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-01 01:09:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:17,070 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 01:09:17,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:09:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 01:09:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 01:09:17,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:17,071 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-01 01:09:17,071 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:17,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:17,072 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-01 01:09:17,072 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:17,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:17,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:17,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:17,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:17,666 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 [2018-10-01 01:09:17,673 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:17,701 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 01:09:17,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:17,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:17,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:17,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2018-10-01 01:09:17,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 01:09:17,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 01:09:17,820 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:17,820 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 39 states. [2018-10-01 01:09:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:18,040 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-01 01:09:18,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:09:18,041 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2018-10-01 01:09:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:18,041 INFO L225 Difference]: With dead ends: 42 [2018-10-01 01:09:18,041 INFO L226 Difference]: Without dead ends: 40 [2018-10-01 01:09:18,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-01 01:09:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-01 01:09:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 01:09:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-01 01:09:18,045 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-01 01:09:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:18,045 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-01 01:09:18,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 01:09:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-01 01:09:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-01 01:09:18,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:18,046 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-01 01:09:18,046 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:18,046 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:18,046 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-01 01:09:18,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:18,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:18,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:18,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:18,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:18,311 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 [2018-10-01 01:09:18,319 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:18,349 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:09:18,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:18,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:18,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:18,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2018-10-01 01:09:18,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:09:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:09:18,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:18,570 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-01 01:09:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:18,806 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 01:09:18,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:09:18,806 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-01 01:09:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:18,807 INFO L225 Difference]: With dead ends: 43 [2018-10-01 01:09:18,807 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 01:09:18,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 01:09:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 01:09:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 01:09:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 01:09:18,809 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-01 01:09:18,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:18,809 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 01:09:18,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:09:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 01:09:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 01:09:18,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:18,810 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-01 01:09:18,811 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:18,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-01 01:09:18,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:18,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:19,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:19,054 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 [2018-10-01 01:09:19,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:19,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:19,212 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:19,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2018-10-01 01:09:19,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:09:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:09:19,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:19,213 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 41 states. [2018-10-01 01:09:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:19,479 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-01 01:09:19,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:09:19,480 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 40 [2018-10-01 01:09:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:19,480 INFO L225 Difference]: With dead ends: 44 [2018-10-01 01:09:19,481 INFO L226 Difference]: Without dead ends: 42 [2018-10-01 01:09:19,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-01 01:09:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-01 01:09:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-01 01:09:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-01 01:09:19,483 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-01 01:09:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:19,484 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-01 01:09:19,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:09:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-01 01:09:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-01 01:09:19,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:19,484 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-01 01:09:19,484 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:19,485 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-01 01:09:19,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:19,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:19,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:19,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:19,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:19,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:19,812 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 [2018-10-01 01:09:19,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:19,841 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:19,841 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:19,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:19,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:19,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2018-10-01 01:09:19,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:09:19,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:09:19,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:19,953 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-01 01:09:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:20,142 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 01:09:20,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:09:20,142 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-01 01:09:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:20,143 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:09:20,143 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 01:09:20,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 01:09:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 01:09:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 01:09:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 01:09:20,148 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-01 01:09:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:20,148 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 01:09:20,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:09:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 01:09:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 01:09:20,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:20,149 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-01 01:09:20,149 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:20,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-01 01:09:20,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:20,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:20,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:20,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:20,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:20,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:20,600 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 [2018-10-01 01:09:20,608 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:20,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 01:09:20,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:20,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:20,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:20,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2018-10-01 01:09:20,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 01:09:20,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 01:09:20,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:20,778 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 43 states. [2018-10-01 01:09:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:21,184 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-01 01:09:21,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:09:21,185 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 42 [2018-10-01 01:09:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:21,186 INFO L225 Difference]: With dead ends: 46 [2018-10-01 01:09:21,186 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 01:09:21,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 01:09:21,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-01 01:09:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-01 01:09:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-01 01:09:21,187 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-01 01:09:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:21,188 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-01 01:09:21,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 01:09:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-01 01:09:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 01:09:21,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:21,188 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-01 01:09:21,188 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:21,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:21,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-01 01:09:21,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:21,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:21,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:21,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:21,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:21,589 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 [2018-10-01 01:09:21,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:21,623 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:21,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:21,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:21,738 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:21,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2018-10-01 01:09:21,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:09:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:09:21,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:21,739 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-01 01:09:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:21,913 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 01:09:21,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:09:21,913 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-01 01:09:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:21,914 INFO L225 Difference]: With dead ends: 47 [2018-10-01 01:09:21,914 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 01:09:21,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 01:09:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 01:09:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 01:09:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 01:09:21,917 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-01 01:09:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:21,917 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 01:09:21,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:09:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 01:09:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 01:09:21,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:21,918 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-01 01:09:21,918 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:21,918 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:21,918 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-01 01:09:21,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:21,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:21,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:21,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:22,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:22,423 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 [2018-10-01 01:09:22,431 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:22,464 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 01:09:22,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:22,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:22,584 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:22,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2018-10-01 01:09:22,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 01:09:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 01:09:22,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:22,585 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 45 states. [2018-10-01 01:09:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:22,917 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-01 01:09:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:09:22,918 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 44 [2018-10-01 01:09:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:22,918 INFO L225 Difference]: With dead ends: 48 [2018-10-01 01:09:22,918 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 01:09:22,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 01:09:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 01:09:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 01:09:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-01 01:09:22,920 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-01 01:09:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:22,920 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-01 01:09:22,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 01:09:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-01 01:09:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-01 01:09:22,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:22,921 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-01 01:09:22,921 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:22,921 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-01 01:09:22,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:22,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:22,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:22,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:22,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:23,233 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 [2018-10-01 01:09:23,241 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:23,272 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 01:09:23,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:23,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,414 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:23,415 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2018-10-01 01:09:23,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:09:23,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:09:23,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:23,416 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-01 01:09:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:23,688 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 01:09:23,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:09:23,688 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-01 01:09:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:23,689 INFO L225 Difference]: With dead ends: 49 [2018-10-01 01:09:23,689 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 01:09:23,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 01:09:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 01:09:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 01:09:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 01:09:23,692 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-01 01:09:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:23,693 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 01:09:23,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:09:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 01:09:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 01:09:23,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:23,693 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-01 01:09:23,693 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:23,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-01 01:09:23,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:23,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:23,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:23,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:23,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:23,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:23,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:23,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:24,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:24,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2018-10-01 01:09:24,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:09:24,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:09:24,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:24,133 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 47 states. [2018-10-01 01:09:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:24,480 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-01 01:09:24,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:09:24,481 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 46 [2018-10-01 01:09:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:24,481 INFO L225 Difference]: With dead ends: 50 [2018-10-01 01:09:24,482 INFO L226 Difference]: Without dead ends: 48 [2018-10-01 01:09:24,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-01 01:09:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-01 01:09:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-01 01:09:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-01 01:09:24,485 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-01 01:09:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:24,486 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-01 01:09:24,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:09:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-01 01:09:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 01:09:24,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:24,486 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-01 01:09:24,486 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:24,487 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:24,487 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-01 01:09:24,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:24,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:24,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:24,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:24,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:24,862 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 [2018-10-01 01:09:24,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:24,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:24,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:24,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:25,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:25,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2018-10-01 01:09:25,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:09:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:09:25,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:25,027 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-01 01:09:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:25,325 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 01:09:25,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:09:25,326 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-01 01:09:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:25,326 INFO L225 Difference]: With dead ends: 51 [2018-10-01 01:09:25,327 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 01:09:25,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 01:09:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 01:09:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 01:09:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 01:09:25,330 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-01 01:09:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:25,330 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 01:09:25,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:09:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 01:09:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 01:09:25,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:25,331 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-01 01:09:25,331 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:25,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-01 01:09:25,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:25,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:25,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:25,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:25,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:25,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:25,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:25,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:25,868 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 01:09:25,868 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:25,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:26,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:26,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2018-10-01 01:09:26,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 01:09:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 01:09:26,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:26,189 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 49 states. [2018-10-01 01:09:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:26,554 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-01 01:09:26,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:09:26,555 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 48 [2018-10-01 01:09:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:26,556 INFO L225 Difference]: With dead ends: 52 [2018-10-01 01:09:26,556 INFO L226 Difference]: Without dead ends: 50 [2018-10-01 01:09:26,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-01 01:09:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-01 01:09:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 01:09:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-01 01:09:26,559 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-01 01:09:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:26,559 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-01 01:09:26,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 01:09:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-01 01:09:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-01 01:09:26,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:26,559 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-01 01:09:26,560 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:26,560 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-01 01:09:26,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:26,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:26,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:26,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:26,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:27,148 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:27,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:27,156 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:27,184 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:27,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:27,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:27,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:27,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2018-10-01 01:09:27,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:09:27,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:09:27,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:27,328 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-01 01:09:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:27,618 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 01:09:27,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:09:27,618 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-01 01:09:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:27,619 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:09:27,619 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 01:09:27,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 01:09:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 01:09:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 01:09:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 01:09:27,622 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-01 01:09:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:27,622 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 01:09:27,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:09:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 01:09:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 01:09:27,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:27,623 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-01 01:09:27,623 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:27,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-01 01:09:27,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:27,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:27,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:27,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:27,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:28,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:28,079 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:28,113 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 01:09:28,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:28,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:28,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2018-10-01 01:09:28,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 01:09:28,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 01:09:28,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:28,232 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 51 states. [2018-10-01 01:09:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:28,464 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-01 01:09:28,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:09:28,471 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 50 [2018-10-01 01:09:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:28,471 INFO L225 Difference]: With dead ends: 54 [2018-10-01 01:09:28,471 INFO L226 Difference]: Without dead ends: 52 [2018-10-01 01:09:28,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-01 01:09:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-01 01:09:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-01 01:09:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-01 01:09:28,474 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-01 01:09:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:28,474 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-01 01:09:28,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 01:09:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-01 01:09:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-01 01:09:28,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:28,475 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-01 01:09:28,475 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:28,475 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-01 01:09:28,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:28,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:28,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:28,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:28,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:28,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:28,756 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:28,794 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 01:09:28,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:28,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:28,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2018-10-01 01:09:28,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:09:28,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:09:28,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:28,925 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-01 01:09:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:29,125 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 01:09:29,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:09:29,126 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-01 01:09:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:29,127 INFO L225 Difference]: With dead ends: 55 [2018-10-01 01:09:29,127 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 01:09:29,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 01:09:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 01:09:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 01:09:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 01:09:29,130 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-01 01:09:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:29,130 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 01:09:29,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:09:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 01:09:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 01:09:29,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:29,131 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-01 01:09:29,131 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:29,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:29,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-01 01:09:29,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:29,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:29,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:29,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:29,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:30,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:30,131 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 [2018-10-01 01:09:30,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:30,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:30,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:30,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2018-10-01 01:09:30,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:09:30,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:09:30,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:30,299 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 53 states. [2018-10-01 01:09:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:30,517 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-01 01:09:30,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:09:30,517 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 52 [2018-10-01 01:09:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:30,517 INFO L225 Difference]: With dead ends: 56 [2018-10-01 01:09:30,518 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 01:09:30,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:09:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 01:09:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-01 01:09:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-01 01:09:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-01 01:09:30,520 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-01 01:09:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:30,520 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-01 01:09:30,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:09:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-01 01:09:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 01:09:30,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:30,521 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-01 01:09:30,522 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:30,522 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-01 01:09:30,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:30,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:30,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:30,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:30,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:30,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:30,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:31,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:31,014 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:31,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:31,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:31,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2018-10-01 01:09:31,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:09:31,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:09:31,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:31,490 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-01 01:09:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:31,714 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 01:09:31,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:09:31,714 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-01 01:09:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:31,715 INFO L225 Difference]: With dead ends: 57 [2018-10-01 01:09:31,715 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 01:09:31,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 01:09:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 01:09:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 01:09:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 01:09:31,718 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-01 01:09:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:31,718 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 01:09:31,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:09:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 01:09:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 01:09:31,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:31,719 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-01 01:09:31,720 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:31,720 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:31,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-01 01:09:31,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:31,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:31,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:31,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:31,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:32,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:32,147 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 [2018-10-01 01:09:32,156 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:32,198 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 01:09:32,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:32,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:32,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:32,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2018-10-01 01:09:32,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 01:09:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 01:09:32,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:32,343 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 55 states. [2018-10-01 01:09:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:32,615 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-01 01:09:32,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:09:32,616 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 54 [2018-10-01 01:09:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:32,617 INFO L225 Difference]: With dead ends: 58 [2018-10-01 01:09:32,617 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 01:09:32,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 01:09:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 01:09:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 01:09:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-01 01:09:32,621 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-01 01:09:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:32,621 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-01 01:09:32,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 01:09:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-01 01:09:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-01 01:09:32,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:32,622 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-01 01:09:32,622 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:32,622 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:32,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-01 01:09:32,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:32,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:32,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:32,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:32,965 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 [2018-10-01 01:09:32,987 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:33,019 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:33,019 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:33,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:33,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2018-10-01 01:09:33,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:09:33,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:09:33,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:33,158 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-01 01:09:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:33,506 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 01:09:33,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:09:33,507 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-01 01:09:33,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:33,508 INFO L225 Difference]: With dead ends: 59 [2018-10-01 01:09:33,508 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 01:09:33,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:09:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 01:09:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 01:09:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 01:09:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 01:09:33,511 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-01 01:09:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:33,511 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 01:09:33,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:09:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 01:09:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 01:09:33,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:33,512 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-01 01:09:33,512 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:33,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:33,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-01 01:09:33,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:33,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:33,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:33,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:33,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:33,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:33,941 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:33,984 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 01:09:33,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:33,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:34,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2018-10-01 01:09:34,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 01:09:34,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 01:09:34,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:34,163 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 57 states. [2018-10-01 01:09:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:34,499 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-01 01:09:34,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:09:34,500 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 56 [2018-10-01 01:09:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:34,501 INFO L225 Difference]: With dead ends: 60 [2018-10-01 01:09:34,501 INFO L226 Difference]: Without dead ends: 58 [2018-10-01 01:09:34,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-01 01:09:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-01 01:09:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-01 01:09:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-01 01:09:34,503 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-01 01:09:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:34,503 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-01 01:09:34,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 01:09:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-01 01:09:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 01:09:34,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:34,504 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-01 01:09:34,504 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:34,504 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-01 01:09:34,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:34,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:34,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:34,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,852 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:34,852 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 [2018-10-01 01:09:34,860 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:34,902 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 01:09:34,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:34,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,147 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:35,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2018-10-01 01:09:35,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:09:35,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:09:35,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:35,148 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-01 01:09:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:35,386 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 01:09:35,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:09:35,386 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-01 01:09:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:35,387 INFO L225 Difference]: With dead ends: 61 [2018-10-01 01:09:35,387 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 01:09:35,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 01:09:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 01:09:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 01:09:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 01:09:35,391 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-01 01:09:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:35,391 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 01:09:35,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:09:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 01:09:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 01:09:35,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:35,392 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-01 01:09:35,392 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:35,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-01 01:09:35,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:35,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:35,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:35,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:35,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:35,861 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 [2018-10-01 01:09:35,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:35,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:36,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2018-10-01 01:09:36,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:09:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:09:36,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:36,101 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 59 states. [2018-10-01 01:09:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:36,458 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-01 01:09:36,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:09:36,459 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 58 [2018-10-01 01:09:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:36,459 INFO L225 Difference]: With dead ends: 62 [2018-10-01 01:09:36,460 INFO L226 Difference]: Without dead ends: 60 [2018-10-01 01:09:36,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-01 01:09:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-01 01:09:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 01:09:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-01 01:09:36,462 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-01 01:09:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:36,463 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-01 01:09:36,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:09:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-01 01:09:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-01 01:09:36,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:36,464 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-01 01:09:36,464 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:36,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:36,464 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-01 01:09:36,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:36,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:36,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:36,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:36,863 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 [2018-10-01 01:09:36,871 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:36,906 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:36,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:36,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,044 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:37,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2018-10-01 01:09:37,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:09:37,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:09:37,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:37,045 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-01 01:09:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:37,278 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 01:09:37,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:09:37,279 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-01 01:09:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:37,280 INFO L225 Difference]: With dead ends: 63 [2018-10-01 01:09:37,280 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 01:09:37,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 01:09:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 01:09:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 01:09:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 01:09:37,284 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-01 01:09:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:37,284 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 01:09:37,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:09:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 01:09:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 01:09:37,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:37,285 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-01 01:09:37,285 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:37,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:37,286 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-01 01:09:37,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:37,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:37,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:37,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:37,618 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 [2018-10-01 01:09:37,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:37,668 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 01:09:37,668 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:37,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:37,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:37,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2018-10-01 01:09:37,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 01:09:37,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 01:09:37,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:37,909 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 61 states. [2018-10-01 01:09:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:38,301 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-01 01:09:38,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:09:38,301 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 60 [2018-10-01 01:09:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:38,302 INFO L225 Difference]: With dead ends: 64 [2018-10-01 01:09:38,302 INFO L226 Difference]: Without dead ends: 62 [2018-10-01 01:09:38,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-01 01:09:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-01 01:09:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-01 01:09:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-01 01:09:38,305 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-01 01:09:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:38,305 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-01 01:09:38,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 01:09:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-01 01:09:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-01 01:09:38,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:38,306 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-01 01:09:38,306 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:38,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-01 01:09:38,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:38,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:38,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:38,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:38,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:39,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:39,042 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:39,076 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:39,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:39,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:39,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:39,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2018-10-01 01:09:39,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:09:39,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:09:39,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:39,243 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-01 01:09:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:39,576 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 01:09:39,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:09:39,576 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-01 01:09:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:39,577 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:09:39,577 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 01:09:39,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 01:09:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 01:09:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 01:09:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 01:09:39,581 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-01 01:09:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:39,581 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 01:09:39,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:09:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 01:09:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 01:09:39,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:39,582 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-01 01:09:39,582 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:39,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-01 01:09:39,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:39,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:40,296 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 [2018-10-01 01:09:40,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:40,351 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 01:09:40,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:40,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:40,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:40,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2018-10-01 01:09:40,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 01:09:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 01:09:40,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:40,580 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 63 states. [2018-10-01 01:09:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:40,932 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-01 01:09:40,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:09:40,933 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 62 [2018-10-01 01:09:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:40,933 INFO L225 Difference]: With dead ends: 66 [2018-10-01 01:09:40,933 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 01:09:40,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:09:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 01:09:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-01 01:09:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-01 01:09:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-01 01:09:40,936 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-01 01:09:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:40,937 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-01 01:09:40,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 01:09:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-01 01:09:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 01:09:40,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:40,937 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-01 01:09:40,937 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:40,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:40,938 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-01 01:09:40,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:40,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:40,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:40,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:43,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:43,374 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 [2018-10-01 01:09:43,383 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:43,433 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 01:09:43,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:43,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:43,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:43,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2018-10-01 01:09:43,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:09:43,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:09:43,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:43,595 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-01 01:09:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:43,977 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 01:09:43,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:09:43,977 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-01 01:09:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:43,978 INFO L225 Difference]: With dead ends: 67 [2018-10-01 01:09:43,978 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 01:09:43,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:09:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 01:09:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 01:09:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 01:09:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 01:09:43,981 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-01 01:09:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:43,981 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 01:09:43,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:09:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 01:09:43,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 01:09:43,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:43,982 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-01 01:09:43,982 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:43,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-01 01:09:43,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:43,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:43,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:43,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:44,347 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 [2018-10-01 01:09:44,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:44,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:44,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:44,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2018-10-01 01:09:44,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:09:44,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:09:44,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:44,550 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 65 states. [2018-10-01 01:09:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:44,943 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-01 01:09:44,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:09:44,944 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 64 [2018-10-01 01:09:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:44,945 INFO L225 Difference]: With dead ends: 68 [2018-10-01 01:09:44,945 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 01:09:44,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 01:09:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 01:09:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 01:09:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-01 01:09:44,948 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-01 01:09:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:44,949 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-01 01:09:44,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:09:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-01 01:09:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-01 01:09:44,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:44,949 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-01 01:09:44,949 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:44,950 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:44,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-01 01:09:44,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:44,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:44,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:44,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:46,394 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 [2018-10-01 01:09:46,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:46,442 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:46,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:46,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:46,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:46,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2018-10-01 01:09:46,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:09:46,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:09:46,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:46,616 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-01 01:09:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:47,087 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 01:09:47,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:09:47,087 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-01 01:09:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:47,088 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:09:47,088 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 01:09:47,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:09:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 01:09:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 01:09:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 01:09:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 01:09:47,091 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-01 01:09:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:47,091 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 01:09:47,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:09:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 01:09:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 01:09:47,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:47,092 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-01 01:09:47,092 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:47,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-01 01:09:47,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:47,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:47,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:48,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:48,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:09:48,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:48,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 01:09:48,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:48,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:48,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:48,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2018-10-01 01:09:48,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 01:09:48,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 01:09:48,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:48,534 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 67 states. [2018-10-01 01:09:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:49,017 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-01 01:09:49,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:09:49,018 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 66 [2018-10-01 01:09:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:49,019 INFO L225 Difference]: With dead ends: 70 [2018-10-01 01:09:49,019 INFO L226 Difference]: Without dead ends: 68 [2018-10-01 01:09:49,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:09:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-01 01:09:49,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-01 01:09:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-01 01:09:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-01 01:09:49,022 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-01 01:09:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:49,023 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-01 01:09:49,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 01:09:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-01 01:09:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 01:09:49,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:49,024 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-01 01:09:49,024 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:49,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:49,024 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-01 01:09:49,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:49,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:49,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:49,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:49,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:49,874 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 [2018-10-01 01:09:49,895 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:49,949 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:49,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:49,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:50,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:50,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2018-10-01 01:09:50,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:09:50,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:09:50,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:50,132 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-01 01:09:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:50,399 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 01:09:50,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:09:50,400 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-01 01:09:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:50,401 INFO L225 Difference]: With dead ends: 71 [2018-10-01 01:09:50,401 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 01:09:50,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:09:50,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 01:09:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 01:09:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 01:09:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 01:09:50,404 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-01 01:09:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:50,404 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 01:09:50,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:09:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 01:09:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 01:09:50,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:50,405 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-01 01:09:50,405 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:50,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-01 01:09:50,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:50,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:50,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:50,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:50,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:50,919 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 [2018-10-01 01:09:50,926 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:50,988 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 01:09:50,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:50,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:51,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:51,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2018-10-01 01:09:51,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 01:09:51,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 01:09:51,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:51,248 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 69 states. [2018-10-01 01:09:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:51,620 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-01 01:09:51,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:09:51,621 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 68 [2018-10-01 01:09:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:51,622 INFO L225 Difference]: With dead ends: 72 [2018-10-01 01:09:51,622 INFO L226 Difference]: Without dead ends: 70 [2018-10-01 01:09:51,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:09:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-01 01:09:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-01 01:09:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 01:09:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-01 01:09:51,625 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-01 01:09:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:51,625 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-01 01:09:51,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 01:09:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-01 01:09:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-01 01:09:51,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:51,626 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-01 01:09:51,626 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:51,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-01 01:09:51,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:51,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:51,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:51,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:52,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:52,006 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 [2018-10-01 01:09:52,013 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:52,063 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 01:09:52,064 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:52,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:52,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:52,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2018-10-01 01:09:52,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:09:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:09:52,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:52,560 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-01 01:09:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:52,992 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 01:09:52,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:09:52,992 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-01 01:09:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:52,993 INFO L225 Difference]: With dead ends: 73 [2018-10-01 01:09:52,993 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 01:09:52,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 01:09:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 01:09:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 01:09:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 01:09:52,995 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-01 01:09:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:52,995 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 01:09:52,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:09:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 01:09:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 01:09:52,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:52,997 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-01 01:09:52,997 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:52,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-01 01:09:52,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:52,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:53,374 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 [2018-10-01 01:09:53,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:53,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:53,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2018-10-01 01:09:53,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:09:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:09:53,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:53,622 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2018-10-01 01:09:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:54,052 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-01 01:09:54,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:09:54,052 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2018-10-01 01:09:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:54,053 INFO L225 Difference]: With dead ends: 74 [2018-10-01 01:09:54,053 INFO L226 Difference]: Without dead ends: 72 [2018-10-01 01:09:54,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:09:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-01 01:09:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-01 01:09:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-01 01:09:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-01 01:09:54,055 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-01 01:09:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:54,055 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-01 01:09:54,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:09:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-01 01:09:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-01 01:09:54,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:54,056 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-01 01:09:54,057 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:54,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-01 01:09:54,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:54,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:54,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:54,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:54,535 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 [2018-10-01 01:09:54,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:54,582 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:54,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:54,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:54,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:54,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2018-10-01 01:09:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:09:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:09:54,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:54,761 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-01 01:09:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:55,196 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 01:09:55,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:09:55,197 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-01 01:09:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:55,197 INFO L225 Difference]: With dead ends: 75 [2018-10-01 01:09:55,198 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 01:09:55,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 01:09:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 01:09:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 01:09:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 01:09:55,201 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-01 01:09:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:55,201 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 01:09:55,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:09:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 01:09:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 01:09:55,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:55,202 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-01 01:09:55,202 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:55,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:55,203 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-01 01:09:55,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:55,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:55,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:55,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:55,668 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 [2018-10-01 01:09:55,675 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:55,734 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 01:09:55,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:55,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:56,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:56,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2018-10-01 01:09:56,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 01:09:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 01:09:56,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:56,723 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 73 states. [2018-10-01 01:09:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:57,190 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-01 01:09:57,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:09:57,191 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 72 [2018-10-01 01:09:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:57,191 INFO L225 Difference]: With dead ends: 76 [2018-10-01 01:09:57,191 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 01:09:57,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:09:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 01:09:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-01 01:09:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-01 01:09:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-01 01:09:57,195 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-01 01:09:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:57,195 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-01 01:09:57,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 01:09:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-01 01:09:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 01:09:57,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:57,196 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-01 01:09:57,196 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:57,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-01 01:09:57,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:57,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:57,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:57,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:57,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:57,593 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:57,593 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 [2018-10-01 01:09:57,604 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:57,657 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:57,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:57,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:57,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:57,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2018-10-01 01:09:57,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:09:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:09:57,863 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:57,863 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-01 01:09:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:58,343 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 01:09:58,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:09:58,344 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-01 01:09:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:58,344 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:09:58,345 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 01:09:58,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:09:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 01:09:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 01:09:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 01:09:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 01:09:58,349 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-01 01:09:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:58,349 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 01:09:58,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:09:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 01:09:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 01:09:58,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:58,350 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-01 01:09:58,350 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:58,350 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:58,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-01 01:09:58,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:58,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:58,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:58,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:58,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:58,806 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 [2018-10-01 01:09:58,814 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:58,875 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 01:09:58,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:58,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:59,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:59,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2018-10-01 01:09:59,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 01:09:59,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 01:09:59,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:59,278 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 75 states. [2018-10-01 01:09:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:59,658 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-01 01:09:59,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:09:59,658 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 74 [2018-10-01 01:09:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:59,659 INFO L225 Difference]: With dead ends: 78 [2018-10-01 01:09:59,660 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 01:09:59,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:09:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 01:09:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 01:09:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 01:09:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-01 01:09:59,663 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-01 01:09:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:59,663 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-01 01:09:59,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 01:09:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-01 01:09:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-01 01:09:59,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:59,664 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-01 01:09:59,664 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:59,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-01 01:09:59,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:59,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:59,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:59,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:59,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:00,179 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 [2018-10-01 01:10:00,187 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:00,284 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 01:10:00,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:00,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:00,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:00,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2018-10-01 01:10:00,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:10:00,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:10:00,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:00,478 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-01 01:10:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:00,779 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 01:10:00,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:10:00,779 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-01 01:10:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:00,780 INFO L225 Difference]: With dead ends: 79 [2018-10-01 01:10:00,780 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 01:10:00,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 01:10:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 01:10:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 01:10:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 01:10:00,782 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-01 01:10:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:00,782 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 01:10:00,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:10:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 01:10:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 01:10:00,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:00,783 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-01 01:10:00,783 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:00,783 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-01 01:10:00,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:00,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:00,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:00,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:00,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:01,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:01,299 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 [2018-10-01 01:10:01,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:01,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:01,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:01,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2018-10-01 01:10:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:10:01,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:10:01,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:01,642 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 77 states. [2018-10-01 01:10:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:02,125 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-01 01:10:02,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:10:02,125 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 76 [2018-10-01 01:10:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:02,126 INFO L225 Difference]: With dead ends: 80 [2018-10-01 01:10:02,126 INFO L226 Difference]: Without dead ends: 78 [2018-10-01 01:10:02,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-01 01:10:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-01 01:10:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-01 01:10:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-01 01:10:02,129 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-01 01:10:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:02,129 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-01 01:10:02,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:10:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-01 01:10:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 01:10:02,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:02,130 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-01 01:10:02,130 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:02,130 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-01 01:10:02,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:02,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:02,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:02,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:02,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:02,556 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 [2018-10-01 01:10:02,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:02,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:02,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:02,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:02,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:02,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2018-10-01 01:10:02,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:10:02,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:10:02,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:02,805 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-01 01:10:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:03,300 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 01:10:03,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:10:03,301 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-01 01:10:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:03,301 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:10:03,301 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 01:10:03,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 01:10:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 01:10:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 01:10:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 01:10:03,304 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-01 01:10:03,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:03,304 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 01:10:03,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:10:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 01:10:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 01:10:03,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:03,305 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-01 01:10:03,306 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:03,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:03,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-01 01:10:03,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:03,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:03,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:03,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:03,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:03,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:03,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:03,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 01:10:03,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:03,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:04,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:04,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2018-10-01 01:10:04,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 01:10:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 01:10:04,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:04,155 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 79 states. [2018-10-01 01:10:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:04,659 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-01 01:10:04,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:10:04,659 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 78 [2018-10-01 01:10:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:04,660 INFO L225 Difference]: With dead ends: 82 [2018-10-01 01:10:04,660 INFO L226 Difference]: Without dead ends: 80 [2018-10-01 01:10:04,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-01 01:10:04,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-01 01:10:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 01:10:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-01 01:10:04,663 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-01 01:10:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:04,664 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-01 01:10:04,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 01:10:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-01 01:10:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-01 01:10:04,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:04,665 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-01 01:10:04,665 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:04,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-01 01:10:04,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:04,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:04,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:04,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:04,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:05,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:05,104 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 [2018-10-01 01:10:05,111 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:05,158 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:05,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:05,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:05,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:05,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2018-10-01 01:10:05,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:10:05,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:10:05,352 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:05,353 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-01 01:10:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:06,519 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 01:10:06,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:10:06,526 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-01 01:10:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:06,526 INFO L225 Difference]: With dead ends: 83 [2018-10-01 01:10:06,526 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 01:10:06,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 01:10:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 01:10:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 01:10:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 01:10:06,529 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-01 01:10:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:06,529 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 01:10:06,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:10:06,530 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 01:10:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 01:10:06,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:06,530 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-01 01:10:06,530 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:06,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:06,531 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-01 01:10:06,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:06,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:06,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:06,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:07,280 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 [2018-10-01 01:10:07,287 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:07,356 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 01:10:07,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:07,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:07,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2018-10-01 01:10:07,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 01:10:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 01:10:07,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:07,545 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 81 states. [2018-10-01 01:10:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:07,892 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-01 01:10:07,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:10:07,892 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 80 [2018-10-01 01:10:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:07,893 INFO L225 Difference]: With dead ends: 84 [2018-10-01 01:10:07,893 INFO L226 Difference]: Without dead ends: 82 [2018-10-01 01:10:07,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-01 01:10:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-01 01:10:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-01 01:10:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-01 01:10:07,895 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-01 01:10:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:07,896 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-01 01:10:07,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 01:10:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-01 01:10:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-01 01:10:07,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:07,896 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-01 01:10:07,896 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:07,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-01 01:10:07,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:07,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:07,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:07,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:07,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:08,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:08,777 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 [2018-10-01 01:10:08,784 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:08,848 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 01:10:08,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:08,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:09,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:09,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2018-10-01 01:10:09,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:10:09,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:10:09,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:09,050 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-01 01:10:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:09,467 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 01:10:09,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:10:09,468 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-01 01:10:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:09,468 INFO L225 Difference]: With dead ends: 85 [2018-10-01 01:10:09,468 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 01:10:09,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 01:10:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 01:10:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 01:10:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 01:10:09,472 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-01 01:10:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:09,472 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 01:10:09,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:10:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 01:10:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 01:10:09,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:09,473 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-01 01:10:09,473 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:09,474 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-01 01:10:09,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:09,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:09,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:09,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:09,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:09,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:09,949 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 [2018-10-01 01:10:09,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:10,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:10,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:10,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2018-10-01 01:10:10,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:10:10,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:10:10,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:10,285 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 83 states. [2018-10-01 01:10:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:10,815 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-01 01:10:10,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:10:10,816 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 82 [2018-10-01 01:10:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:10,817 INFO L225 Difference]: With dead ends: 86 [2018-10-01 01:10:10,817 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 01:10:10,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 01:10:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-01 01:10:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-01 01:10:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-01 01:10:10,820 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-01 01:10:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:10,820 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-01 01:10:10,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:10:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-01 01:10:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 01:10:10,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:10,821 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-01 01:10:10,822 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:10,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-01 01:10:10,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:10,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:10,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:10,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:10,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:11,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:11,295 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 [2018-10-01 01:10:11,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:11,350 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:11,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:11,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:12,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:12,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2018-10-01 01:10:12,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:10:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:10:12,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:12,474 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-01 01:10:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:12,818 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 01:10:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:10:12,818 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-01 01:10:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:12,819 INFO L225 Difference]: With dead ends: 87 [2018-10-01 01:10:12,819 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 01:10:12,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:10:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 01:10:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 01:10:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 01:10:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 01:10:12,821 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-01 01:10:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:12,821 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 01:10:12,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:10:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 01:10:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 01:10:12,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:12,822 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-01 01:10:12,822 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:12,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:12,822 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-01 01:10:12,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:12,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:12,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:12,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:12,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:13,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:13,809 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 [2018-10-01 01:10:13,816 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:13,885 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 01:10:13,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:13,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:14,101 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:14,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2018-10-01 01:10:14,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 01:10:14,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 01:10:14,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:14,102 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 85 states. [2018-10-01 01:10:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:14,622 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-01 01:10:14,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:10:14,622 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 84 [2018-10-01 01:10:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:14,623 INFO L225 Difference]: With dead ends: 88 [2018-10-01 01:10:14,623 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 01:10:14,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:10:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 01:10:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 01:10:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 01:10:14,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-01 01:10:14,626 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-01 01:10:14,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:14,626 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-01 01:10:14,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 01:10:14,627 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-01 01:10:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-01 01:10:14,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:14,627 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-01 01:10:14,627 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:14,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:14,628 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-01 01:10:14,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:14,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:14,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:14,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:14,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:15,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:15,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:15,143 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:15,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:15,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:15,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:15,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:15,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2018-10-01 01:10:15,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:10:15,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:10:15,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:15,531 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-01 01:10:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:15,966 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 01:10:15,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:10:15,966 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-01 01:10:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:15,967 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:10:15,967 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 01:10:15,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 01:10:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 01:10:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 01:10:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 01:10:15,969 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-01 01:10:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:15,969 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 01:10:15,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:10:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 01:10:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 01:10:15,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:15,970 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-01 01:10:15,970 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:15,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:15,971 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-01 01:10:15,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:15,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:15,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:15,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:15,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:17,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:17,014 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 [2018-10-01 01:10:17,022 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:17,100 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 01:10:17,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:17,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:17,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:17,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2018-10-01 01:10:17,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 01:10:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 01:10:17,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:17,300 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 87 states. [2018-10-01 01:10:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:18,151 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-01 01:10:18,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:10:18,151 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 86 [2018-10-01 01:10:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:18,152 INFO L225 Difference]: With dead ends: 90 [2018-10-01 01:10:18,152 INFO L226 Difference]: Without dead ends: 88 [2018-10-01 01:10:18,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:10:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-01 01:10:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-01 01:10:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-01 01:10:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-01 01:10:18,155 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-01 01:10:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:18,155 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-01 01:10:18,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 01:10:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-01 01:10:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 01:10:18,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:18,156 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-01 01:10:18,156 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:18,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:18,157 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-01 01:10:18,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:18,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:18,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:18,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:18,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:18,639 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:18,651 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:18,726 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 01:10:18,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:18,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:18,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:18,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2018-10-01 01:10:18,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:10:18,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:10:18,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:18,931 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-01 01:10:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:19,415 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 01:10:19,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:10:19,416 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-01 01:10:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:19,416 INFO L225 Difference]: With dead ends: 91 [2018-10-01 01:10:19,417 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 01:10:19,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:10:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 01:10:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 01:10:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 01:10:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 01:10:19,419 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-01 01:10:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:19,420 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 01:10:19,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:10:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 01:10:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 01:10:19,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:19,420 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-01 01:10:19,421 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:19,421 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-01 01:10:19,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:19,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:19,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:19,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:19,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:19,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:19,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:19,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:19,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:20,177 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:20,178 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2018-10-01 01:10:20,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:10:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:10:20,179 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:20,179 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 89 states. [2018-10-01 01:10:20,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:20,576 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-01 01:10:20,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:10:20,577 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 88 [2018-10-01 01:10:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:20,578 INFO L225 Difference]: With dead ends: 92 [2018-10-01 01:10:20,578 INFO L226 Difference]: Without dead ends: 90 [2018-10-01 01:10:20,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-01 01:10:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-01 01:10:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 01:10:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-01 01:10:20,580 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-01 01:10:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:20,581 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-01 01:10:20,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:10:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-01 01:10:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-01 01:10:20,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:20,582 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-01 01:10:20,582 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:20,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-01 01:10:20,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:20,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:20,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:20,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:21,095 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 [2018-10-01 01:10:21,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:21,150 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:21,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:21,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:21,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2018-10-01 01:10:21,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:10:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:10:21,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:21,361 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-01 01:10:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:21,817 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 01:10:21,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:10:21,817 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-01 01:10:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:21,818 INFO L225 Difference]: With dead ends: 93 [2018-10-01 01:10:21,818 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 01:10:21,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 01:10:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 01:10:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 01:10:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 01:10:21,822 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-01 01:10:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:21,822 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 01:10:21,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:10:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 01:10:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 01:10:21,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:21,823 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-01 01:10:21,823 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:21,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:21,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-01 01:10:21,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:21,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:21,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:21,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:21,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:22,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:22,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:22,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:22,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 01:10:22,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:22,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:22,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:22,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2018-10-01 01:10:22,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 01:10:22,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 01:10:22,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:22,749 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 91 states. [2018-10-01 01:10:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:23,136 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-01 01:10:23,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:10:23,137 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 90 [2018-10-01 01:10:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:23,137 INFO L225 Difference]: With dead ends: 94 [2018-10-01 01:10:23,137 INFO L226 Difference]: Without dead ends: 92 [2018-10-01 01:10:23,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-01 01:10:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-01 01:10:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-01 01:10:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-01 01:10:23,140 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-01 01:10:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:23,140 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-01 01:10:23,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 01:10:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-01 01:10:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-01 01:10:23,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:23,141 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-01 01:10:23,141 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:23,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:23,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-01 01:10:23,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:23,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:23,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:23,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:23,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:23,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:23,663 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 [2018-10-01 01:10:23,670 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:23,725 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:23,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:23,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:23,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:23,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2018-10-01 01:10:23,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:10:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:10:23,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:23,948 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-01 01:10:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:24,355 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 01:10:24,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 01:10:24,355 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-01 01:10:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:24,356 INFO L225 Difference]: With dead ends: 95 [2018-10-01 01:10:24,356 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 01:10:24,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 01:10:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 01:10:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 01:10:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 01:10:24,359 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-01 01:10:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:24,359 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 01:10:24,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:10:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 01:10:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 01:10:24,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:24,359 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-01 01:10:24,360 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:24,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-01 01:10:24,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:24,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:24,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:24,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:24,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:24,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:24,909 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:25,031 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 01:10:25,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:25,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:25,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:25,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2018-10-01 01:10:25,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 01:10:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 01:10:25,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:25,362 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 93 states. [2018-10-01 01:10:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:25,777 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-01 01:10:25,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:10:25,778 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 92 [2018-10-01 01:10:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:25,778 INFO L225 Difference]: With dead ends: 96 [2018-10-01 01:10:25,778 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 01:10:25,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 01:10:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-01 01:10:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-01 01:10:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-01 01:10:25,782 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-01 01:10:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:25,783 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-01 01:10:25,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 01:10:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-01 01:10:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 01:10:25,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:25,784 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-01 01:10:25,784 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:25,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-01 01:10:25,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:26,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:26,349 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 [2018-10-01 01:10:26,357 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:26,438 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 01:10:26,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:26,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:26,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:26,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2018-10-01 01:10:26,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:10:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:10:26,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:26,657 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-01 01:10:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:27,329 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 01:10:27,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:10:27,330 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-01 01:10:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:27,331 INFO L225 Difference]: With dead ends: 97 [2018-10-01 01:10:27,331 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 01:10:27,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 01:10:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 01:10:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 01:10:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 01:10:27,334 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-01 01:10:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:27,334 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 01:10:27,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:10:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 01:10:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 01:10:27,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:27,335 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-01 01:10:27,335 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:27,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-01 01:10:27,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:27,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:27,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:27,880 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 [2018-10-01 01:10:27,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:27,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:28,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:28,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2018-10-01 01:10:28,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 01:10:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 01:10:28,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:28,161 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 95 states. [2018-10-01 01:10:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:28,780 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-01 01:10:28,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:10:28,780 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 94 [2018-10-01 01:10:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:28,781 INFO L225 Difference]: With dead ends: 98 [2018-10-01 01:10:28,781 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 01:10:28,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:10:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 01:10:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 01:10:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 01:10:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-01 01:10:28,783 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-01 01:10:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:28,784 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-01 01:10:28,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 01:10:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-01 01:10:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-01 01:10:28,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:28,784 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-01 01:10:28,784 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:28,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:28,785 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-01 01:10:28,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:28,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:28,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:28,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:28,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:29,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:29,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:29,396 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:29,445 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:29,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:29,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:29,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:29,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2018-10-01 01:10:29,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:10:29,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:10:29,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:29,742 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-01 01:10:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:30,432 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 01:10:30,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:10:30,433 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-01 01:10:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:30,433 INFO L225 Difference]: With dead ends: 99 [2018-10-01 01:10:30,433 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 01:10:30,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 01:10:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 01:10:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 01:10:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 01:10:30,436 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-01 01:10:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:30,436 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 01:10:30,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:10:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 01:10:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 01:10:30,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:30,436 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-01 01:10:30,437 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:30,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-01 01:10:30,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:30,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:30,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:30,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:31,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:31,096 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 [2018-10-01 01:10:31,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:31,191 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 01:10:31,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:31,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:31,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:31,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2018-10-01 01:10:31,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 01:10:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 01:10:31,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:31,447 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 97 states. [2018-10-01 01:10:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:31,954 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-01 01:10:31,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:10:31,955 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 96 [2018-10-01 01:10:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:31,955 INFO L225 Difference]: With dead ends: 100 [2018-10-01 01:10:31,956 INFO L226 Difference]: Without dead ends: 98 [2018-10-01 01:10:31,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-01 01:10:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-01 01:10:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-01 01:10:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-01 01:10:31,959 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-01 01:10:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:31,960 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-01 01:10:31,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 01:10:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-01 01:10:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 01:10:31,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:31,961 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-01 01:10:31,961 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:31,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-01 01:10:31,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:31,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:31,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:32,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:32,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:32,835 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:32,894 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:32,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:32,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:33,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:33,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2018-10-01 01:10:33,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:10:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:10:33,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:33,126 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-01 01:10:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:33,826 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 01:10:33,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:10:33,826 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-01 01:10:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:33,826 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:10:33,827 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 01:10:33,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 01:10:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 01:10:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 01:10:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 01:10:33,829 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-01 01:10:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:33,830 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 01:10:33,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:10:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 01:10:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 01:10:33,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:33,830 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-01 01:10:33,831 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:33,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-01 01:10:33,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:33,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:33,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:33,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:33,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:34,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:34,409 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 [2018-10-01 01:10:34,417 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:34,510 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 01:10:34,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:34,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:34,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:34,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2018-10-01 01:10:34,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 01:10:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 01:10:34,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:34,755 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 99 states. [2018-10-01 01:10:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:35,265 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-01 01:10:35,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:10:35,265 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 98 [2018-10-01 01:10:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:35,266 INFO L225 Difference]: With dead ends: 102 [2018-10-01 01:10:35,266 INFO L226 Difference]: Without dead ends: 100 [2018-10-01 01:10:35,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-01 01:10:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-01 01:10:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 01:10:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-01 01:10:35,268 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-01 01:10:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:35,269 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-01 01:10:35,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 01:10:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-01 01:10:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-01 01:10:35,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:35,269 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-01 01:10:35,270 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:35,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:35,270 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-01 01:10:35,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:35,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:35,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:35,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:35,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:35,864 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:35,864 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 [2018-10-01 01:10:35,871 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:35,959 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 01:10:35,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:35,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:36,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:36,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2018-10-01 01:10:36,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:10:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:10:36,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:36,196 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-01 01:10:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:36,665 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 01:10:36,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:10:36,665 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-01 01:10:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:36,666 INFO L225 Difference]: With dead ends: 103 [2018-10-01 01:10:36,666 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 01:10:36,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 01:10:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 01:10:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 01:10:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 01:10:36,669 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-01 01:10:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:36,669 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 01:10:36,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:10:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 01:10:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 01:10:36,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:36,670 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-01 01:10:36,670 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:36,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:36,670 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-01 01:10:36,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:36,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:36,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:36,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:37,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:37,430 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 [2018-10-01 01:10:37,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:37,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:37,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:37,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2018-10-01 01:10:37,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:10:37,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:10:37,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:37,727 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 101 states. [2018-10-01 01:10:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:38,482 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-01 01:10:38,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:10:38,482 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 100 [2018-10-01 01:10:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:38,483 INFO L225 Difference]: With dead ends: 104 [2018-10-01 01:10:38,483 INFO L226 Difference]: Without dead ends: 102 [2018-10-01 01:10:38,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-01 01:10:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-01 01:10:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-01 01:10:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-01 01:10:38,486 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-01 01:10:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:38,486 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-01 01:10:38,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:10:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-01 01:10:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-01 01:10:38,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:38,487 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-01 01:10:38,487 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:38,487 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:38,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-01 01:10:38,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:38,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:38,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:38,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:39,109 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 [2018-10-01 01:10:39,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:39,170 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:39,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:39,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:39,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2018-10-01 01:10:39,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:10:39,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:10:39,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:39,408 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-01 01:10:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:40,146 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 01:10:40,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:10:40,146 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-01 01:10:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:40,147 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:10:40,147 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 01:10:40,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 01:10:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 01:10:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 01:10:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 01:10:40,150 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-01 01:10:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:40,150 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 01:10:40,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:10:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 01:10:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 01:10:40,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:40,151 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-01 01:10:40,151 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:40,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-01 01:10:40,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:40,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:40,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:40,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:40,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:40,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:40,781 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 [2018-10-01 01:10:40,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:40,886 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 01:10:40,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:40,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:41,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:41,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2018-10-01 01:10:41,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 01:10:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 01:10:41,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:41,129 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 103 states. [2018-10-01 01:10:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:41,844 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-01 01:10:41,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:10:41,844 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 102 [2018-10-01 01:10:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:41,845 INFO L225 Difference]: With dead ends: 106 [2018-10-01 01:10:41,845 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 01:10:41,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:10:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 01:10:41,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-01 01:10:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-01 01:10:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-01 01:10:41,849 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-01 01:10:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:41,849 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-01 01:10:41,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 01:10:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-01 01:10:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 01:10:41,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:41,850 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-01 01:10:41,850 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:41,850 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-01 01:10:41,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:41,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:41,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:41,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:42,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:42,744 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 [2018-10-01 01:10:42,750 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:42,810 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:42,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:42,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:43,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:43,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2018-10-01 01:10:43,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:10:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:10:43,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:43,068 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-01 01:10:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:43,761 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 01:10:43,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:10:43,762 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-01 01:10:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:43,763 INFO L225 Difference]: With dead ends: 107 [2018-10-01 01:10:43,763 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 01:10:43,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:10:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 01:10:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 01:10:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 01:10:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 01:10:43,766 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-01 01:10:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:43,766 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 01:10:43,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:10:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 01:10:43,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 01:10:43,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:43,767 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-01 01:10:43,768 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:43,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:43,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-01 01:10:43,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:43,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:43,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:43,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:44,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:44,485 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:44,492 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:44,599 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 01:10:44,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:44,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:44,856 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:44,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2018-10-01 01:10:44,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 01:10:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 01:10:44,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:44,858 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 105 states. [2018-10-01 01:10:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:45,595 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-01 01:10:45,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:10:45,595 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 104 [2018-10-01 01:10:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:45,596 INFO L225 Difference]: With dead ends: 108 [2018-10-01 01:10:45,596 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 01:10:45,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 01:10:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 01:10:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 01:10:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-01 01:10:45,599 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-01 01:10:45,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:45,600 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-01 01:10:45,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 01:10:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-01 01:10:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-01 01:10:45,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:45,601 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-01 01:10:45,601 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:45,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:45,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-01 01:10:45,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:45,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:45,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:45,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:45,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:46,346 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:46,347 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 [2018-10-01 01:10:46,354 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:46,448 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 01:10:46,449 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:46,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:46,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:46,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2018-10-01 01:10:46,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:10:46,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:10:46,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:46,877 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-01 01:10:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:47,782 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 01:10:47,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:10:47,783 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-01 01:10:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:47,783 INFO L225 Difference]: With dead ends: 109 [2018-10-01 01:10:47,784 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 01:10:47,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:10:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 01:10:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 01:10:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 01:10:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 01:10:47,786 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-01 01:10:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:47,787 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 01:10:47,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:10:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 01:10:47,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 01:10:47,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:47,788 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-01 01:10:47,788 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:47,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:47,789 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-01 01:10:47,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:47,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:47,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:47,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:47,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:48,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:48,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:48,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:48,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:48,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:48,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2018-10-01 01:10:48,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:10:48,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:10:48,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:48,827 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 107 states. [2018-10-01 01:10:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:49,701 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-01 01:10:49,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:10:49,702 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 106 [2018-10-01 01:10:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:49,702 INFO L225 Difference]: With dead ends: 110 [2018-10-01 01:10:49,702 INFO L226 Difference]: Without dead ends: 108 [2018-10-01 01:10:49,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-01 01:10:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-01 01:10:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-01 01:10:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-01 01:10:49,706 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-01 01:10:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:49,706 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-01 01:10:49,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:10:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-01 01:10:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 01:10:49,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:49,707 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-01 01:10:49,707 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:49,708 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-01 01:10:49,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:49,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:49,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:49,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:49,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:50,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:50,472 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 [2018-10-01 01:10:50,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:50,537 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:50,537 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:50,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:50,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:50,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2018-10-01 01:10:50,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:10:50,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:10:50,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:50,924 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-01 01:10:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:51,460 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 01:10:51,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:10:51,460 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-01 01:10:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:51,461 INFO L225 Difference]: With dead ends: 111 [2018-10-01 01:10:51,461 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 01:10:51,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:10:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 01:10:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 01:10:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 01:10:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 01:10:51,463 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-01 01:10:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:51,463 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 01:10:51,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:10:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 01:10:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 01:10:51,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:51,464 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-01 01:10:51,464 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:51,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:51,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-01 01:10:51,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:51,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:51,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:51,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:52,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:52,139 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 [2018-10-01 01:10:52,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:52,251 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 01:10:52,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:52,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:52,558 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:52,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2018-10-01 01:10:52,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 01:10:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 01:10:52,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:52,560 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 109 states. [2018-10-01 01:10:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:53,252 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-01 01:10:53,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:10:53,252 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 108 [2018-10-01 01:10:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:53,252 INFO L225 Difference]: With dead ends: 112 [2018-10-01 01:10:53,252 INFO L226 Difference]: Without dead ends: 110 [2018-10-01 01:10:53,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-01 01:10:53,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-01 01:10:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 01:10:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-01 01:10:53,255 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-01 01:10:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:53,255 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-01 01:10:53,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 01:10:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-01 01:10:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-01 01:10:53,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:53,256 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-01 01:10:53,256 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:53,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:53,256 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-01 01:10:53,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:53,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:53,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:53,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:53,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:53,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:53,946 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 [2018-10-01 01:10:53,954 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:54,022 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:54,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:54,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:54,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:54,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2018-10-01 01:10:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 01:10:54,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 01:10:54,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:54,308 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states. [2018-10-01 01:10:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:55,176 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 01:10:55,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 01:10:55,176 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109 [2018-10-01 01:10:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:55,177 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:10:55,177 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 01:10:55,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 01:10:55,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 01:10:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 01:10:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 01:10:55,181 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-01 01:10:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:55,181 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 01:10:55,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 01:10:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 01:10:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 01:10:55,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:55,182 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-01 01:10:55,182 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:55,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:55,182 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-01 01:10:55,182 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:55,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:55,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:55,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:55,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:55,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:55,893 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 [2018-10-01 01:10:55,901 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:56,007 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 01:10:56,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:56,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:56,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:56,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2018-10-01 01:10:56,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 01:10:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 01:10:56,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:56,276 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 111 states. [2018-10-01 01:10:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:57,101 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-01 01:10:57,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:10:57,101 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 110 [2018-10-01 01:10:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:57,102 INFO L225 Difference]: With dead ends: 114 [2018-10-01 01:10:57,102 INFO L226 Difference]: Without dead ends: 112 [2018-10-01 01:10:57,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:10:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-01 01:10:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-01 01:10:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-01 01:10:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-01 01:10:57,104 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-01 01:10:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:57,104 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-01 01:10:57,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 01:10:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-01 01:10:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-01 01:10:57,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:57,105 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-01 01:10:57,105 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:57,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-01 01:10:57,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:57,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:57,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:57,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:57,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:58,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:58,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:10:58,163 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:58,265 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 01:10:58,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:58,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:58,529 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:58,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2018-10-01 01:10:58,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:10:58,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:10:58,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:58,531 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states. [2018-10-01 01:10:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:59,433 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 01:10:59,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:10:59,433 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111 [2018-10-01 01:10:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:59,433 INFO L225 Difference]: With dead ends: 115 [2018-10-01 01:10:59,434 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 01:10:59,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:10:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 01:10:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 01:10:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 01:10:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 01:10:59,436 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-01 01:10:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:59,436 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 01:10:59,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:10:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 01:10:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 01:10:59,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:59,437 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-01 01:10:59,437 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:59,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-01 01:10:59,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:59,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:59,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:59,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:00,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:00,183 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 [2018-10-01 01:11:00,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:00,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:00,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:00,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2018-10-01 01:11:00,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:11:00,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:11:00,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:00,523 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 113 states. [2018-10-01 01:11:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:01,280 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-01 01:11:01,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:11:01,280 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 112 [2018-10-01 01:11:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:01,280 INFO L225 Difference]: With dead ends: 116 [2018-10-01 01:11:01,281 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 01:11:01,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 01:11:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-01 01:11:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-01 01:11:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-01 01:11:01,284 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-01 01:11:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:01,284 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-01 01:11:01,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:11:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-01 01:11:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 01:11:01,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:01,285 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-01 01:11:01,285 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:01,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:01,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-01 01:11:01,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:01,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:01,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:01,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:02,041 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:02,041 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 [2018-10-01 01:11:02,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:02,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:02,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:02,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:02,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:02,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2018-10-01 01:11:02,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:11:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:11:02,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:02,382 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states. [2018-10-01 01:11:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:03,356 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 01:11:03,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:11:03,356 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113 [2018-10-01 01:11:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:03,357 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:11:03,357 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 01:11:03,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 01:11:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 01:11:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 01:11:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 01:11:03,360 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-01 01:11:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:03,361 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 01:11:03,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:11:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 01:11:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 01:11:03,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:03,361 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-01 01:11:03,362 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:03,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:03,362 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-01 01:11:03,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:03,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:03,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:03,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:03,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:04,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:04,111 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 [2018-10-01 01:11:04,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:04,270 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 01:11:04,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:04,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:04,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:04,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2018-10-01 01:11:04,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 01:11:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 01:11:04,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:04,551 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 115 states. [2018-10-01 01:11:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:05,173 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-01 01:11:05,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:11:05,173 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 114 [2018-10-01 01:11:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:05,174 INFO L225 Difference]: With dead ends: 118 [2018-10-01 01:11:05,174 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 01:11:05,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 01:11:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 01:11:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 01:11:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-01 01:11:05,177 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-01 01:11:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:05,177 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-01 01:11:05,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 01:11:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-01 01:11:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-01 01:11:05,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:05,178 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-01 01:11:05,178 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:05,178 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-01 01:11:05,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:05,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:05,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:05,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:05,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:05,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:05,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:05,962 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:06,032 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:06,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:06,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:06,334 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:06,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2018-10-01 01:11:06,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:11:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:11:06,336 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:06,336 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states. [2018-10-01 01:11:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:07,346 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 01:11:07,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:11:07,347 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115 [2018-10-01 01:11:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:07,347 INFO L225 Difference]: With dead ends: 119 [2018-10-01 01:11:07,347 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 01:11:07,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 01:11:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 01:11:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 01:11:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 01:11:07,351 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-01 01:11:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:07,351 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 01:11:07,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:11:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 01:11:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 01:11:07,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:07,352 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-01 01:11:07,352 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:07,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-10-01 01:11:07,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:07,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:07,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:07,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:07,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:08,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:08,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:08,310 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:08,431 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 01:11:08,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:08,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:08,731 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:08,731 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2018-10-01 01:11:08,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 01:11:08,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 01:11:08,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:08,732 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 117 states. [2018-10-01 01:11:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:09,387 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-01 01:11:09,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:11:09,387 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 116 [2018-10-01 01:11:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:09,388 INFO L225 Difference]: With dead ends: 120 [2018-10-01 01:11:09,388 INFO L226 Difference]: Without dead ends: 118 [2018-10-01 01:11:09,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-01 01:11:09,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-01 01:11:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-01 01:11:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-01 01:11:09,391 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-01 01:11:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:09,392 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-01 01:11:09,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 01:11:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-01 01:11:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 01:11:09,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:09,393 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-01 01:11:09,393 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:09,393 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-10-01 01:11:09,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:09,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:09,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:09,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:10,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:10,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:10,270 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 01:11:10,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:10,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:10,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 117 [2018-10-01 01:11:10,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:11:10,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:11:10,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:10,558 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states. [2018-10-01 01:11:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:11,482 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 01:11:11,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 01:11:11,482 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117 [2018-10-01 01:11:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:11,483 INFO L225 Difference]: With dead ends: 121 [2018-10-01 01:11:11,483 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 01:11:11,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:11:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 01:11:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 01:11:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 01:11:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 01:11:11,486 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-10-01 01:11:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:11,486 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 01:11:11,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:11:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 01:11:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 01:11:11,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:11,487 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-10-01 01:11:11,487 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:11,487 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:11,488 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-10-01 01:11:11,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:11,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:11,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:11,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:11,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:12,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:12,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:12,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:12,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:12,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:12,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 118 [2018-10-01 01:11:12,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 01:11:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 01:11:12,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:12,638 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 119 states. [2018-10-01 01:11:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:13,351 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-10-01 01:11:13,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:11:13,351 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 118 [2018-10-01 01:11:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:13,351 INFO L225 Difference]: With dead ends: 122 [2018-10-01 01:11:13,351 INFO L226 Difference]: Without dead ends: 120 [2018-10-01 01:11:13,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:13,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-01 01:11:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-10-01 01:11:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 01:11:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-10-01 01:11:13,354 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-10-01 01:11:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:13,354 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-10-01 01:11:13,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 01:11:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-10-01 01:11:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-01 01:11:13,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:13,355 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-10-01 01:11:13,355 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:13,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:13,355 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-10-01 01:11:13,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:13,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:13,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:13,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:13,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:14,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:14,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:14,172 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:14,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:14,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:14,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:14,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:14,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 119 [2018-10-01 01:11:14,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:11:14,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:11:14,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:14,539 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states. [2018-10-01 01:11:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:15,339 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 01:11:15,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:11:15,339 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119 [2018-10-01 01:11:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:15,340 INFO L225 Difference]: With dead ends: 123 [2018-10-01 01:11:15,340 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 01:11:15,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 01:11:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 01:11:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 01:11:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 01:11:15,342 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-10-01 01:11:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:15,342 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 01:11:15,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:11:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 01:11:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 01:11:15,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:15,343 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-10-01 01:11:15,343 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:15,343 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-10-01 01:11:15,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:15,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:15,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:15,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:16,106 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:16,113 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:16,239 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 01:11:16,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:16,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:16,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 120 [2018-10-01 01:11:16,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 01:11:16,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 01:11:16,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:16,538 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 121 states. [2018-10-01 01:11:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:17,426 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-10-01 01:11:17,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:11:17,426 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 120 [2018-10-01 01:11:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:17,427 INFO L225 Difference]: With dead ends: 124 [2018-10-01 01:11:17,427 INFO L226 Difference]: Without dead ends: 122 [2018-10-01 01:11:17,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-01 01:11:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-01 01:11:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-01 01:11:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-10-01 01:11:17,430 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-10-01 01:11:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:17,430 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-10-01 01:11:17,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 01:11:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-10-01 01:11:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-01 01:11:17,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:17,430 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-10-01 01:11:17,431 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:17,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:17,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-10-01 01:11:17,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:17,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:17,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:17,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:18,559 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:18,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:18,566 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:18,642 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:18,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:18,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:18,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:18,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 121 [2018-10-01 01:11:18,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 01:11:18,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 01:11:18,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:18,932 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states. [2018-10-01 01:11:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:19,678 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 01:11:19,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 01:11:19,678 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121 [2018-10-01 01:11:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:19,679 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:11:19,679 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 01:11:19,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 01:11:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 01:11:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 01:11:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 01:11:19,682 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-10-01 01:11:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:19,682 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 01:11:19,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 01:11:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 01:11:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 01:11:19,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:19,683 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-10-01 01:11:19,683 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:19,684 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:19,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-10-01 01:11:19,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:19,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:19,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:19,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:19,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:20,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:20,534 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:20,541 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:20,665 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 01:11:20,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:20,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:20,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:20,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 122 [2018-10-01 01:11:20,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 01:11:20,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 01:11:20,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:20,963 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 123 states. [2018-10-01 01:11:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:21,826 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-10-01 01:11:21,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 01:11:21,826 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 122 [2018-10-01 01:11:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:21,827 INFO L225 Difference]: With dead ends: 126 [2018-10-01 01:11:21,827 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 01:11:21,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 01:11:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-01 01:11:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-01 01:11:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-10-01 01:11:21,830 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-10-01 01:11:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:21,831 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-10-01 01:11:21,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 01:11:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-10-01 01:11:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 01:11:21,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:21,832 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-10-01 01:11:21,832 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:21,832 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-10-01 01:11:21,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:21,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:21,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:21,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:22,689 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:22,689 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:22,696 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:22,814 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 01:11:22,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:22,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:23,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:23,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 123 [2018-10-01 01:11:23,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:11:23,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:11:23,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:23,141 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states. [2018-10-01 01:11:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:24,241 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 01:11:24,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:11:24,242 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123 [2018-10-01 01:11:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:24,242 INFO L225 Difference]: With dead ends: 127 [2018-10-01 01:11:24,242 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 01:11:24,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 01:11:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 01:11:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 01:11:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 01:11:24,245 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-10-01 01:11:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:24,245 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 01:11:24,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:11:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 01:11:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 01:11:24,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:24,246 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-10-01 01:11:24,246 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:24,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:24,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-10-01 01:11:24,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:24,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:24,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:24,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:24,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:25,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:25,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:25,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:25,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:25,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:25,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 124 [2018-10-01 01:11:25,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 01:11:25,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 01:11:25,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:25,467 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 125 states. [2018-10-01 01:11:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:26,327 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-10-01 01:11:26,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:11:26,328 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 124 [2018-10-01 01:11:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:26,328 INFO L225 Difference]: With dead ends: 128 [2018-10-01 01:11:26,328 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 01:11:26,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 01:11:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 01:11:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 01:11:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-10-01 01:11:26,330 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-10-01 01:11:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:26,331 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-10-01 01:11:26,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 01:11:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-10-01 01:11:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-01 01:11:26,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:26,331 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-10-01 01:11:26,331 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:26,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-10-01 01:11:26,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:26,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:26,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:26,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:26,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:27,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:27,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:27,193 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:27,264 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:27,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:27,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:27,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:27,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 125 [2018-10-01 01:11:27,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 01:11:27,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 01:11:27,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:27,582 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states. [2018-10-01 01:11:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:28,223 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 01:11:28,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:11:28,223 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125 [2018-10-01 01:11:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:28,224 INFO L225 Difference]: With dead ends: 129 [2018-10-01 01:11:28,224 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 01:11:28,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:11:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 01:11:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 01:11:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 01:11:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 01:11:28,227 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-10-01 01:11:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:28,228 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 01:11:28,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 01:11:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 01:11:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 01:11:28,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:28,228 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-10-01 01:11:28,229 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:28,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-10-01 01:11:28,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:28,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:28,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:29,250 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:29,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:29,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:29,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 01:11:29,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:29,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:29,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:29,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 126 [2018-10-01 01:11:29,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 01:11:29,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 01:11:29,708 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:29,708 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 127 states. [2018-10-01 01:11:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:30,520 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-10-01 01:11:30,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 01:11:30,521 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 126 [2018-10-01 01:11:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:30,521 INFO L225 Difference]: With dead ends: 130 [2018-10-01 01:11:30,521 INFO L226 Difference]: Without dead ends: 128 [2018-10-01 01:11:30,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-01 01:11:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-01 01:11:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-01 01:11:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-10-01 01:11:30,524 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-10-01 01:11:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:30,524 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-10-01 01:11:30,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 01:11:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-10-01 01:11:30,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 01:11:30,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:30,524 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-10-01 01:11:30,525 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:30,525 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:30,525 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-10-01 01:11:30,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:30,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:30,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:30,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:31,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:31,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:31,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:31,507 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:31,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:31,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:31,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:31,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 127 [2018-10-01 01:11:31,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:11:31,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:11:31,825 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:31,825 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states. [2018-10-01 01:11:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:32,845 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 01:11:32,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 01:11:32,845 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127 [2018-10-01 01:11:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:32,845 INFO L225 Difference]: With dead ends: 131 [2018-10-01 01:11:32,846 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 01:11:32,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 01:11:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 01:11:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 01:11:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 01:11:32,849 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-10-01 01:11:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:32,849 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 01:11:32,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:11:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 01:11:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 01:11:32,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:32,850 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-10-01 01:11:32,850 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:32,850 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-10-01 01:11:32,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:32,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:32,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:32,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:32,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:33,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:33,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:33,919 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:34,051 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 01:11:34,051 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:34,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:34,357 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:34,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 128 [2018-10-01 01:11:34,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 01:11:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 01:11:34,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:34,359 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 129 states. [2018-10-01 01:11:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:35,369 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-10-01 01:11:35,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:11:35,370 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 128 [2018-10-01 01:11:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:35,370 INFO L225 Difference]: With dead ends: 132 [2018-10-01 01:11:35,370 INFO L226 Difference]: Without dead ends: 130 [2018-10-01 01:11:35,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-01 01:11:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-01 01:11:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 01:11:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-10-01 01:11:35,374 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-10-01 01:11:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:35,374 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-10-01 01:11:35,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 01:11:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-10-01 01:11:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-01 01:11:35,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:35,375 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-10-01 01:11:35,375 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:35,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:35,376 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-10-01 01:11:35,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:35,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:35,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:35,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:35,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:36,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:36,324 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:36,457 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 01:11:36,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:36,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:36,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:36,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 129 [2018-10-01 01:11:36,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 01:11:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 01:11:36,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:36,788 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states. [2018-10-01 01:11:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:37,841 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 01:11:37,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:11:37,842 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129 [2018-10-01 01:11:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:37,842 INFO L225 Difference]: With dead ends: 133 [2018-10-01 01:11:37,842 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 01:11:37,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 01:11:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 01:11:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 01:11:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 01:11:37,845 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-10-01 01:11:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:37,845 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 01:11:37,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 01:11:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 01:11:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 01:11:37,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:37,846 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-10-01 01:11:37,846 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:37,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:37,847 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-10-01 01:11:37,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:37,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:37,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:37,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:37,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:38,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:38,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:38,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:38,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:39,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:39,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 130 [2018-10-01 01:11:39,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 01:11:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 01:11:39,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:39,332 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 131 states. [2018-10-01 01:11:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:40,419 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-10-01 01:11:40,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 01:11:40,419 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 130 [2018-10-01 01:11:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:40,420 INFO L225 Difference]: With dead ends: 134 [2018-10-01 01:11:40,420 INFO L226 Difference]: Without dead ends: 132 [2018-10-01 01:11:40,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:11:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-01 01:11:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-10-01 01:11:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-01 01:11:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-10-01 01:11:40,424 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-10-01 01:11:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:40,424 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-10-01 01:11:40,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 01:11:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-10-01 01:11:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-01 01:11:40,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:40,425 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-10-01 01:11:40,425 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:40,425 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-10-01 01:11:40,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:40,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:40,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:40,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:40,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:41,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:41,338 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:41,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:41,419 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:41,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:41,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:41,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:41,765 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 131 [2018-10-01 01:11:41,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 01:11:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 01:11:41,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:41,767 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states. [2018-10-01 01:11:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:42,652 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 01:11:42,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:11:42,652 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131 [2018-10-01 01:11:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:42,653 INFO L225 Difference]: With dead ends: 135 [2018-10-01 01:11:42,653 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 01:11:42,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 01:11:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 01:11:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 01:11:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 01:11:42,656 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-10-01 01:11:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:42,657 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 01:11:42,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 01:11:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 01:11:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 01:11:42,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:42,658 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-10-01 01:11:42,658 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:42,658 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-10-01 01:11:42,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:42,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:42,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:42,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:42,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:43,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:43,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:43,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:43,779 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 01:11:43,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:43,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:44,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:44,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 132 [2018-10-01 01:11:44,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 01:11:44,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 01:11:44,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:44,163 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 133 states. [2018-10-01 01:11:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:44,878 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-10-01 01:11:44,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 01:11:44,879 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 132 [2018-10-01 01:11:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:44,879 INFO L225 Difference]: With dead ends: 136 [2018-10-01 01:11:44,879 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 01:11:44,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 01:11:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-10-01 01:11:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-01 01:11:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-10-01 01:11:44,882 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-10-01 01:11:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:44,883 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-10-01 01:11:44,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 01:11:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-10-01 01:11:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 01:11:44,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:44,884 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-10-01 01:11:44,884 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:44,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:44,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-10-01 01:11:44,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:44,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:44,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:44,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:44,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:45,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:45,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:45,852 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:45,938 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:45,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:45,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:46,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:46,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 133 [2018-10-01 01:11:46,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 01:11:46,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 01:11:46,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:46,278 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states. [2018-10-01 01:11:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:47,035 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 01:11:47,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 01:11:47,036 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133 [2018-10-01 01:11:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:47,036 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:11:47,036 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 01:11:47,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 01:11:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 01:11:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 01:11:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 01:11:47,039 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-10-01 01:11:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:47,039 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 01:11:47,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 01:11:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 01:11:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 01:11:47,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:47,040 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-10-01 01:11:47,040 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:47,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-10-01 01:11:47,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:47,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:47,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:47,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:47,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:47,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:47,956 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:47,964 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:48,113 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 01:11:48,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:48,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:48,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:48,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 134 [2018-10-01 01:11:48,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 01:11:48,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 01:11:48,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:48,453 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 135 states. [2018-10-01 01:11:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:49,699 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-10-01 01:11:49,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 01:11:49,700 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 134 [2018-10-01 01:11:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:49,700 INFO L225 Difference]: With dead ends: 138 [2018-10-01 01:11:49,700 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 01:11:49,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 01:11:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 01:11:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 01:11:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-10-01 01:11:49,704 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-10-01 01:11:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:49,704 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-10-01 01:11:49,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 01:11:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-10-01 01:11:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-01 01:11:49,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:49,705 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-10-01 01:11:49,705 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:49,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-10-01 01:11:49,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:49,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:49,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:49,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:49,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:50,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:50,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:50,641 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:50,780 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 01:11:50,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:50,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:51,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:51,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 135 [2018-10-01 01:11:51,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 01:11:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 01:11:51,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:51,127 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states. [2018-10-01 01:11:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:52,241 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 01:11:52,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 01:11:52,242 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135 [2018-10-01 01:11:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:52,242 INFO L225 Difference]: With dead ends: 139 [2018-10-01 01:11:52,242 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 01:11:52,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 01:11:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 01:11:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 01:11:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 01:11:52,245 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-10-01 01:11:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:52,245 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 01:11:52,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 01:11:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 01:11:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 01:11:52,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:52,246 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-10-01 01:11:52,246 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:52,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:52,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-10-01 01:11:52,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:52,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:52,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:52,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:52,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:53,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:53,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:53,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:53,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:53,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:53,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 136 [2018-10-01 01:11:53,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 01:11:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 01:11:53,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:53,615 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 137 states. [2018-10-01 01:11:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:54,875 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-10-01 01:11:54,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 01:11:54,875 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 136 [2018-10-01 01:11:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:54,876 INFO L225 Difference]: With dead ends: 140 [2018-10-01 01:11:54,876 INFO L226 Difference]: Without dead ends: 138 [2018-10-01 01:11:54,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:11:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-01 01:11:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-10-01 01:11:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-01 01:11:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-10-01 01:11:54,878 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-10-01 01:11:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:54,878 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-10-01 01:11:54,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 01:11:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-10-01 01:11:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 01:11:54,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:54,879 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-10-01 01:11:54,879 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:54,879 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-10-01 01:11:54,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:54,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:54,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:54,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:55,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:55,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:55,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:55,928 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:55,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:55,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:56,263 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:56,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 137 [2018-10-01 01:11:56,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 01:11:56,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 01:11:56,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:56,265 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states. [2018-10-01 01:11:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:57,055 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 01:11:57,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:11:57,055 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137 [2018-10-01 01:11:57,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:57,056 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:11:57,056 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 01:11:57,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 01:11:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 01:11:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 01:11:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 01:11:57,058 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-10-01 01:11:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:57,059 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 01:11:57,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 01:11:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 01:11:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 01:11:57,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:57,060 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-10-01 01:11:57,060 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:57,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-10-01 01:11:57,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:57,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:57,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:57,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:57,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:58,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:58,047 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:58,057 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:58,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 01:11:58,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:58,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:58,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:58,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 138 [2018-10-01 01:11:58,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 01:11:58,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 01:11:58,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:58,557 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 139 states. [2018-10-01 01:11:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:59,870 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-10-01 01:11:59,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 01:11:59,870 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 138 [2018-10-01 01:11:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:59,871 INFO L225 Difference]: With dead ends: 142 [2018-10-01 01:11:59,871 INFO L226 Difference]: Without dead ends: 140 [2018-10-01 01:11:59,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:11:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-01 01:11:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-01 01:11:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 01:11:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-10-01 01:11:59,874 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-10-01 01:11:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:59,875 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-10-01 01:11:59,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 01:11:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-10-01 01:11:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-01 01:11:59,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:59,876 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-10-01 01:11:59,876 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:59,876 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-10-01 01:11:59,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:59,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:59,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:00,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:00,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:00,849 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:00,941 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:00,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:00,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:01,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:01,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 139 [2018-10-01 01:12:01,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 01:12:01,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 01:12:01,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:01,297 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states. [2018-10-01 01:12:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:02,355 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 01:12:02,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 01:12:02,355 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139 [2018-10-01 01:12:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:02,356 INFO L225 Difference]: With dead ends: 143 [2018-10-01 01:12:02,356 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 01:12:02,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 01:12:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 01:12:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 01:12:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 01:12:02,358 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-10-01 01:12:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:02,358 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 01:12:02,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 01:12:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 01:12:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 01:12:02,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:02,359 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-10-01 01:12:02,359 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:02,359 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:02,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-10-01 01:12:02,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:02,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:02,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:02,360 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:02,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:03,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:03,354 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:03,362 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:03,530 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 01:12:03,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:03,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:03,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:03,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 140 [2018-10-01 01:12:03,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 01:12:03,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 01:12:03,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:03,898 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 141 states. [2018-10-01 01:12:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:05,239 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-10-01 01:12:05,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 01:12:05,240 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 140 [2018-10-01 01:12:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:05,240 INFO L225 Difference]: With dead ends: 144 [2018-10-01 01:12:05,240 INFO L226 Difference]: Without dead ends: 142 [2018-10-01 01:12:05,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-01 01:12:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-01 01:12:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-01 01:12:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-10-01 01:12:05,243 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-10-01 01:12:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:05,243 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-10-01 01:12:05,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 01:12:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-10-01 01:12:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-01 01:12:05,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:05,244 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-10-01 01:12:05,244 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:05,244 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:05,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-10-01 01:12:05,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:05,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:05,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:05,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:05,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:06,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:06,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:06,265 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:06,416 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 01:12:06,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:06,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:06,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:06,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 141 [2018-10-01 01:12:06,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:12:06,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:12:06,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:06,755 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states. [2018-10-01 01:12:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:08,032 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 01:12:08,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 01:12:08,032 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141 [2018-10-01 01:12:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:08,032 INFO L225 Difference]: With dead ends: 145 [2018-10-01 01:12:08,033 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 01:12:08,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 01:12:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 01:12:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 01:12:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 01:12:08,035 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-10-01 01:12:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:08,036 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 01:12:08,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:12:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 01:12:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 01:12:08,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:08,036 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-10-01 01:12:08,037 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:08,037 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-10-01 01:12:08,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:08,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:08,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:08,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:08,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:09,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:09,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:09,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:09,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:09,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:09,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 142 [2018-10-01 01:12:09,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 01:12:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 01:12:09,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:09,640 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 143 states. [2018-10-01 01:12:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:10,855 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-10-01 01:12:10,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 01:12:10,855 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 142 [2018-10-01 01:12:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:10,856 INFO L225 Difference]: With dead ends: 146 [2018-10-01 01:12:10,856 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 01:12:10,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 01:12:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-10-01 01:12:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-01 01:12:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-10-01 01:12:10,858 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-10-01 01:12:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:10,858 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-10-01 01:12:10,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 01:12:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-10-01 01:12:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 01:12:10,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:10,859 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-10-01 01:12:10,859 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:10,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:10,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-10-01 01:12:10,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:10,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:10,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:10,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:11,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:11,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:11,878 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:11,959 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:11,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:11,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:12,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:12,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 143 [2018-10-01 01:12:12,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 01:12:12,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 01:12:12,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:12,329 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states. [2018-10-01 01:12:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:13,739 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 01:12:13,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:12:13,740 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143 [2018-10-01 01:12:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:13,741 INFO L225 Difference]: With dead ends: 147 [2018-10-01 01:12:13,741 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 01:12:13,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:12:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 01:12:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 01:12:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 01:12:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 01:12:13,743 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-10-01 01:12:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:13,743 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 01:12:13,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 01:12:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 01:12:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 01:12:13,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:13,744 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-10-01 01:12:13,744 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:13,744 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-10-01 01:12:13,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:13,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:13,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:13,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:13,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:14,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:14,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:14,926 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:15,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 01:12:15,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:15,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:15,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:15,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 144 [2018-10-01 01:12:15,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 01:12:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 01:12:15,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:15,449 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 145 states. [2018-10-01 01:12:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:17,013 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-10-01 01:12:17,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 01:12:17,014 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 144 [2018-10-01 01:12:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:17,014 INFO L225 Difference]: With dead ends: 148 [2018-10-01 01:12:17,014 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 01:12:17,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 01:12:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 01:12:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 01:12:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-10-01 01:12:17,017 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-10-01 01:12:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:17,017 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-10-01 01:12:17,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 01:12:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-10-01 01:12:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-01 01:12:17,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:17,018 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-10-01 01:12:17,018 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:17,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-10-01 01:12:17,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:17,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:17,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:17,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:17,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:18,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:18,054 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:18,062 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:18,166 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:18,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:18,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:18,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:18,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 145 [2018-10-01 01:12:18,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 01:12:18,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 01:12:18,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:18,572 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states. [2018-10-01 01:12:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:19,587 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 01:12:19,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 01:12:19,588 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145 [2018-10-01 01:12:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:19,588 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:12:19,588 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 01:12:19,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 01:12:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 01:12:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 01:12:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 01:12:19,591 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-10-01 01:12:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:19,591 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 01:12:19,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 01:12:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 01:12:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 01:12:19,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:19,592 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-10-01 01:12:19,592 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:19,592 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-10-01 01:12:19,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:19,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:19,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:19,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:20,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:20,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:20,709 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:20,880 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 01:12:20,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:20,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:21,232 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:21,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 146 [2018-10-01 01:12:21,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 01:12:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 01:12:21,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:21,234 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 147 states. [2018-10-01 01:12:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:22,828 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2018-10-01 01:12:22,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 01:12:22,829 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 146 [2018-10-01 01:12:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:22,829 INFO L225 Difference]: With dead ends: 150 [2018-10-01 01:12:22,829 INFO L226 Difference]: Without dead ends: 148 [2018-10-01 01:12:22,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-01 01:12:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-01 01:12:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-01 01:12:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2018-10-01 01:12:22,833 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 146 [2018-10-01 01:12:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:22,833 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2018-10-01 01:12:22,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 01:12:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2018-10-01 01:12:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 01:12:22,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:22,834 INFO L375 BasicCegarLoop]: trace histogram [144, 1, 1, 1] [2018-10-01 01:12:22,834 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:22,834 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:22,834 INFO L82 PathProgramCache]: Analyzing trace with hash 855411552, now seen corresponding path program 144 times [2018-10-01 01:12:22,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:22,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:22,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:22,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:22,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:23,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:23,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:23,939 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:24,099 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 01:12:24,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:24,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10440 backedges. 0 proven. 10440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:24,469 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:24,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 147 [2018-10-01 01:12:24,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 01:12:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 01:12:24,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:24,471 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states. [2018-10-01 01:12:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:26,231 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 01:12:26,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 01:12:26,231 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147 [2018-10-01 01:12:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:26,232 INFO L225 Difference]: With dead ends: 151 [2018-10-01 01:12:26,232 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 01:12:26,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 01:12:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 01:12:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 01:12:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 01:12:26,235 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 147 [2018-10-01 01:12:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:26,235 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 01:12:26,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 01:12:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 01:12:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 01:12:26,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:26,235 INFO L375 BasicCegarLoop]: trace histogram [145, 1, 1, 1] [2018-10-01 01:12:26,236 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:26,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:26,236 INFO L82 PathProgramCache]: Analyzing trace with hash 747950470, now seen corresponding path program 145 times [2018-10-01 01:12:26,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:26,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:26,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:26,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:26,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:27,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:27,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:27,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:27,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:27,840 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:27,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 148 [2018-10-01 01:12:27,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 01:12:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 01:12:27,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:27,842 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 149 states. [2018-10-01 01:12:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:28,725 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2018-10-01 01:12:28,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 01:12:28,726 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 148 [2018-10-01 01:12:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:28,726 INFO L225 Difference]: With dead ends: 152 [2018-10-01 01:12:28,726 INFO L226 Difference]: Without dead ends: 150 [2018-10-01 01:12:28,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-01 01:12:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-01 01:12:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 01:12:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-01 01:12:28,729 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 148 [2018-10-01 01:12:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:28,729 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-01 01:12:28,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 01:12:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-01 01:12:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-01 01:12:28,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:28,730 INFO L375 BasicCegarLoop]: trace histogram [146, 1, 1, 1] [2018-10-01 01:12:28,730 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:28,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1711624224, now seen corresponding path program 146 times [2018-10-01 01:12:28,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:28,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:28,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:28,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:29,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:29,912 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:29,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:30,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:30,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:30,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10731 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:30,427 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:30,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 149 [2018-10-01 01:12:30,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 01:12:30,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 01:12:30,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:30,430 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 150 states. [2018-10-01 01:12:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:31,705 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 01:12:31,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:12:31,705 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 149 [2018-10-01 01:12:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:31,706 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:12:31,706 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 01:12:31,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 01:12:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 01:12:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 01:12:31,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 01:12:31,708 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 149 [2018-10-01 01:12:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:31,708 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 01:12:31,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 01:12:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 01:12:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 01:12:31,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:31,709 INFO L375 BasicCegarLoop]: trace histogram [147, 1, 1, 1] [2018-10-01 01:12:31,709 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:31,709 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1520739526, now seen corresponding path program 147 times [2018-10-01 01:12:31,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:31,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:31,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:31,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:31,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:32,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:32,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:32,816 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:33,002 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 01:12:33,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:33,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:33,369 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:33,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 150 [2018-10-01 01:12:33,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 01:12:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 01:12:33,372 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:33,372 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 151 states. [2018-10-01 01:12:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:34,955 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-01 01:12:34,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 01:12:34,956 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 150 [2018-10-01 01:12:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:34,956 INFO L225 Difference]: With dead ends: 154 [2018-10-01 01:12:34,956 INFO L226 Difference]: Without dead ends: 152 [2018-10-01 01:12:34,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-10-01 01:12:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2018-10-01 01:12:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-10-01 01:12:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-10-01 01:12:34,960 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 150 [2018-10-01 01:12:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:34,960 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-10-01 01:12:34,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 01:12:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-10-01 01:12:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-01 01:12:34,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:34,961 INFO L375 BasicCegarLoop]: trace histogram [148, 1, 1, 1] [2018-10-01 01:12:34,961 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:34,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash -101718816, now seen corresponding path program 148 times [2018-10-01 01:12:34,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:34,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:34,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:34,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:34,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:36,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:36,133 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:36,144 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:36,243 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:36,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:36,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:36,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:36,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 151 [2018-10-01 01:12:36,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 01:12:36,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 01:12:36,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:36,631 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 152 states. [2018-10-01 01:12:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:38,295 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 01:12:38,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 01:12:38,296 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 151 [2018-10-01 01:12:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:38,296 INFO L225 Difference]: With dead ends: 155 [2018-10-01 01:12:38,296 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 01:12:38,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 01:12:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 01:12:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 01:12:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 01:12:38,300 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 151 [2018-10-01 01:12:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:38,300 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 01:12:38,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 01:12:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 01:12:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 01:12:38,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:38,301 INFO L375 BasicCegarLoop]: trace histogram [149, 1, 1, 1] [2018-10-01 01:12:38,301 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:38,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1141680134, now seen corresponding path program 149 times [2018-10-01 01:12:38,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:38,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:38,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:38,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:39,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:39,431 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:39,438 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:39,627 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 01:12:39,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:39,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:40,007 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:40,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 152 [2018-10-01 01:12:40,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 01:12:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 01:12:40,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:40,010 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 153 states. [2018-10-01 01:12:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:41,839 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2018-10-01 01:12:41,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 01:12:41,839 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 152 [2018-10-01 01:12:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:41,840 INFO L225 Difference]: With dead ends: 156 [2018-10-01 01:12:41,840 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 01:12:41,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 01:12:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-01 01:12:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-01 01:12:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2018-10-01 01:12:41,843 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 152 [2018-10-01 01:12:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:41,843 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2018-10-01 01:12:41,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 01:12:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2018-10-01 01:12:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 01:12:41,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:41,844 INFO L375 BasicCegarLoop]: trace histogram [150, 1, 1, 1] [2018-10-01 01:12:41,844 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:41,844 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1032341920, now seen corresponding path program 150 times [2018-10-01 01:12:41,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:41,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:41,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:41,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:43,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:43,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:43,026 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:43,198 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2018-10-01 01:12:43,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:43,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11325 backedges. 0 proven. 11325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:43,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:43,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 153 [2018-10-01 01:12:43,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 01:12:43,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 01:12:43,578 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:43,578 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 154 states. [2018-10-01 01:12:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:45,450 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 01:12:45,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 01:12:45,450 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 153 [2018-10-01 01:12:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:45,451 INFO L225 Difference]: With dead ends: 157 [2018-10-01 01:12:45,451 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 01:12:45,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 01:12:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 01:12:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 01:12:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 01:12:45,453 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 153 [2018-10-01 01:12:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:45,453 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 01:12:45,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 01:12:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 01:12:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 01:12:45,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:45,454 INFO L375 BasicCegarLoop]: trace histogram [151, 1, 1, 1] [2018-10-01 01:12:45,454 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:45,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:45,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1937824582, now seen corresponding path program 151 times [2018-10-01 01:12:45,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:45,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:45,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:45,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:45,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:46,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:46,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:46,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:46,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:47,080 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:47,080 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 154 [2018-10-01 01:12:47,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 01:12:47,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 01:12:47,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:47,083 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 155 states. [2018-10-01 01:12:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:48,750 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2018-10-01 01:12:48,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 01:12:48,750 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 154 [2018-10-01 01:12:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:48,751 INFO L225 Difference]: With dead ends: 158 [2018-10-01 01:12:48,751 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 01:12:48,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:48,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 01:12:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 01:12:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 01:12:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-10-01 01:12:48,753 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 154 [2018-10-01 01:12:48,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:48,754 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-10-01 01:12:48,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 01:12:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-10-01 01:12:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-01 01:12:48,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:48,754 INFO L375 BasicCegarLoop]: trace histogram [152, 1, 1, 1] [2018-10-01 01:12:48,754 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:48,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash -56983968, now seen corresponding path program 152 times [2018-10-01 01:12:48,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:48,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:48,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:48,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:48,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:49,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:49,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:49,917 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:50,005 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:50,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:50,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11628 backedges. 0 proven. 11628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:50,462 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:50,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 155 [2018-10-01 01:12:50,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 01:12:50,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 01:12:50,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:50,464 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 156 states. [2018-10-01 01:12:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:52,250 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 01:12:52,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:12:52,252 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 155 [2018-10-01 01:12:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:52,252 INFO L225 Difference]: With dead ends: 159 [2018-10-01 01:12:52,252 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 01:12:52,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 01:12:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 01:12:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 01:12:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 01:12:52,255 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 155 [2018-10-01 01:12:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:52,255 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 01:12:52,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 01:12:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 01:12:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 01:12:52,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:52,256 INFO L375 BasicCegarLoop]: trace histogram [153, 1, 1, 1] [2018-10-01 01:12:52,256 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:52,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1766506874, now seen corresponding path program 153 times [2018-10-01 01:12:52,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:52,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:52,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:52,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:52,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:53,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:53,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:53,422 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:53,610 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2018-10-01 01:12:53,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:53,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:54,007 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:54,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 156 [2018-10-01 01:12:54,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 01:12:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 01:12:54,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:54,009 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 157 states. [2018-10-01 01:12:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:55,872 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-10-01 01:12:55,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 01:12:55,872 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 156 [2018-10-01 01:12:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:55,872 INFO L225 Difference]: With dead ends: 160 [2018-10-01 01:12:55,872 INFO L226 Difference]: Without dead ends: 158 [2018-10-01 01:12:55,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:12:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-01 01:12:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-01 01:12:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-01 01:12:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2018-10-01 01:12:55,875 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 156 [2018-10-01 01:12:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:55,875 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2018-10-01 01:12:55,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 01:12:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2018-10-01 01:12:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 01:12:55,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:55,876 INFO L375 BasicCegarLoop]: trace histogram [154, 1, 1, 1] [2018-10-01 01:12:55,876 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:55,876 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:55,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1072857888, now seen corresponding path program 154 times [2018-10-01 01:12:55,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:55,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:55,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:55,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:57,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:57,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:57,058 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:57,163 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:57,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:57,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11935 backedges. 0 proven. 11935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:57,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:57,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 157 [2018-10-01 01:12:57,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 01:12:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 01:12:57,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:57,556 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 158 states. [2018-10-01 01:12:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:59,411 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 01:12:59,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 01:12:59,411 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 157 [2018-10-01 01:12:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:59,412 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:12:59,412 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 01:12:59,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:12:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 01:12:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 01:12:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 01:12:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 01:12:59,414 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 157 [2018-10-01 01:12:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:59,415 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 01:12:59,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 01:12:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 01:12:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 01:12:59,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:59,415 INFO L375 BasicCegarLoop]: trace histogram [155, 1, 1, 1] [2018-10-01 01:12:59,415 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:59,415 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:59,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1101147706, now seen corresponding path program 155 times [2018-10-01 01:12:59,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:59,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:59,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:59,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:59,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:00,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:00,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:00,714 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:00,926 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-01 01:13:00,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:00,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:01,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:01,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 158 [2018-10-01 01:13:01,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 01:13:01,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 01:13:01,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:01,310 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 159 states. [2018-10-01 01:13:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:03,112 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2018-10-01 01:13:03,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 01:13:03,112 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 158 [2018-10-01 01:13:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:03,113 INFO L225 Difference]: With dead ends: 162 [2018-10-01 01:13:03,113 INFO L226 Difference]: Without dead ends: 160 [2018-10-01 01:13:03,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:03,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-01 01:13:03,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-01 01:13:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 01:13:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2018-10-01 01:13:03,116 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 158 [2018-10-01 01:13:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:03,116 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2018-10-01 01:13:03,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 01:13:03,116 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2018-10-01 01:13:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-01 01:13:03,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:03,116 INFO L375 BasicCegarLoop]: trace histogram [156, 1, 1, 1] [2018-10-01 01:13:03,117 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:03,117 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash 224155616, now seen corresponding path program 156 times [2018-10-01 01:13:03,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:03,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:03,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:03,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:03,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:04,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:04,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:04,322 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:04,514 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 01:13:04,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:04,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12246 backedges. 0 proven. 12246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:04,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:04,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 159 [2018-10-01 01:13:04,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 01:13:04,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 01:13:04,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:04,924 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 160 states. [2018-10-01 01:13:06,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:06,719 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 01:13:06,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 01:13:06,720 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 159 [2018-10-01 01:13:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:06,720 INFO L225 Difference]: With dead ends: 163 [2018-10-01 01:13:06,720 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 01:13:06,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 01:13:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 01:13:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 01:13:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 01:13:06,724 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 159 [2018-10-01 01:13:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:06,724 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 01:13:06,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 01:13:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 01:13:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 01:13:06,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:06,725 INFO L375 BasicCegarLoop]: trace histogram [157, 1, 1, 1] [2018-10-01 01:13:06,725 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:06,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1641114362, now seen corresponding path program 157 times [2018-10-01 01:13:06,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:06,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:06,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:06,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:06,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:07,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:07,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:07,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:08,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:08,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:08,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 160 [2018-10-01 01:13:08,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 01:13:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 01:13:08,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:08,439 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 161 states. [2018-10-01 01:13:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:09,551 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-10-01 01:13:09,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 01:13:09,551 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 160 [2018-10-01 01:13:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:09,551 INFO L225 Difference]: With dead ends: 164 [2018-10-01 01:13:09,551 INFO L226 Difference]: Without dead ends: 162 [2018-10-01 01:13:09,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-01 01:13:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-10-01 01:13:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-10-01 01:13:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-10-01 01:13:09,554 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 160 [2018-10-01 01:13:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:09,554 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-10-01 01:13:09,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 01:13:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-10-01 01:13:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-01 01:13:09,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:09,555 INFO L375 BasicCegarLoop]: trace histogram [158, 1, 1, 1] [2018-10-01 01:13:09,555 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:09,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:09,555 INFO L82 PathProgramCache]: Analyzing trace with hash 665058464, now seen corresponding path program 158 times [2018-10-01 01:13:09,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:09,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:09,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:09,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:10,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:10,876 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:10,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:10,973 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:10,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:10,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 0 proven. 12561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:11,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:11,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 161 [2018-10-01 01:13:11,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 01:13:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 01:13:11,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:11,420 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 162 states. [2018-10-01 01:13:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:12,810 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 01:13:12,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:13:12,810 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 161 [2018-10-01 01:13:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:12,810 INFO L225 Difference]: With dead ends: 165 [2018-10-01 01:13:12,810 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 01:13:12,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 01:13:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 01:13:12,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 01:13:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 01:13:12,813 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 161 [2018-10-01 01:13:12,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:12,813 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 01:13:12,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 01:13:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 01:13:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 01:13:12,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:12,814 INFO L375 BasicCegarLoop]: trace histogram [159, 1, 1, 1] [2018-10-01 01:13:12,814 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:12,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash -858027962, now seen corresponding path program 159 times [2018-10-01 01:13:12,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:12,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:12,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:12,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:12,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:14,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:14,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:14,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:14,344 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2018-10-01 01:13:14,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:14,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:14,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:14,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 162 [2018-10-01 01:13:14,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 01:13:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 01:13:14,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:14,745 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 163 states. [2018-10-01 01:13:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:16,686 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-10-01 01:13:16,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 01:13:16,687 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 162 [2018-10-01 01:13:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:16,687 INFO L225 Difference]: With dead ends: 166 [2018-10-01 01:13:16,687 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 01:13:16,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 01:13:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-01 01:13:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-01 01:13:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2018-10-01 01:13:16,690 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 162 [2018-10-01 01:13:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:16,690 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2018-10-01 01:13:16,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 01:13:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2018-10-01 01:13:16,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 01:13:16,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:16,691 INFO L375 BasicCegarLoop]: trace histogram [160, 1, 1, 1] [2018-10-01 01:13:16,691 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:16,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash -829066912, now seen corresponding path program 160 times [2018-10-01 01:13:16,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:16,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:17,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:17,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:17,940 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:18,046 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:18,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:18,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12880 backedges. 0 proven. 12880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:18,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:18,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 163 [2018-10-01 01:13:18,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 01:13:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 01:13:18,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:18,451 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 164 states. [2018-10-01 01:13:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:19,998 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 01:13:19,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 01:13:19,998 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 163 [2018-10-01 01:13:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:19,998 INFO L225 Difference]: With dead ends: 167 [2018-10-01 01:13:19,998 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 01:13:19,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:13:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 01:13:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 01:13:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 01:13:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 01:13:20,001 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 163 [2018-10-01 01:13:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:20,001 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 01:13:20,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 01:13:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 01:13:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 01:13:20,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:20,002 INFO L375 BasicCegarLoop]: trace histogram [161, 1, 1, 1] [2018-10-01 01:13:20,003 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:20,003 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash 68725638, now seen corresponding path program 161 times [2018-10-01 01:13:20,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:20,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:20,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:20,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:21,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:21,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:21,429 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:21,637 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-10-01 01:13:21,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:21,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:22,044 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:22,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 164 [2018-10-01 01:13:22,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 01:13:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 01:13:22,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:22,047 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 165 states. [2018-10-01 01:13:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:23,315 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2018-10-01 01:13:23,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 01:13:23,315 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 164 [2018-10-01 01:13:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:23,316 INFO L225 Difference]: With dead ends: 168 [2018-10-01 01:13:23,316 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 01:13:23,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 01:13:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 01:13:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 01:13:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-01 01:13:23,320 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 164 [2018-10-01 01:13:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:23,320 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-01 01:13:23,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 01:13:23,320 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-01 01:13:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-01 01:13:23,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:23,321 INFO L375 BasicCegarLoop]: trace histogram [162, 1, 1, 1] [2018-10-01 01:13:23,321 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:23,321 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2130490912, now seen corresponding path program 162 times [2018-10-01 01:13:23,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:23,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:23,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:23,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:23,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:24,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:24,684 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:24,691 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:24,887 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2018-10-01 01:13:24,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:24,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13203 backedges. 0 proven. 13203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:25,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:25,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 165 [2018-10-01 01:13:25,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 01:13:25,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 01:13:25,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:25,295 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 166 states. [2018-10-01 01:13:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:27,175 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 01:13:27,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 01:13:27,175 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 165 [2018-10-01 01:13:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:27,176 INFO L225 Difference]: With dead ends: 169 [2018-10-01 01:13:27,176 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 01:13:27,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 01:13:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 01:13:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 01:13:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 01:13:27,179 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 165 [2018-10-01 01:13:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:27,179 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 01:13:27,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 01:13:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 01:13:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 01:13:27,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:27,180 INFO L375 BasicCegarLoop]: trace histogram [163, 1, 1, 1] [2018-10-01 01:13:27,180 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:27,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1620704966, now seen corresponding path program 163 times [2018-10-01 01:13:27,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:27,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:27,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:27,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:27,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:28,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:28,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:28,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:28,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:29,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:29,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 166 [2018-10-01 01:13:29,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 01:13:29,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 01:13:29,026 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:29,026 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 167 states. [2018-10-01 01:13:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:30,170 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-01 01:13:30,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 01:13:30,171 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 166 [2018-10-01 01:13:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:30,171 INFO L225 Difference]: With dead ends: 170 [2018-10-01 01:13:30,171 INFO L226 Difference]: Without dead ends: 168 [2018-10-01 01:13:30,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-01 01:13:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-10-01 01:13:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-01 01:13:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-10-01 01:13:30,174 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 166 [2018-10-01 01:13:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:30,174 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-10-01 01:13:30,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 01:13:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-10-01 01:13:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 01:13:30,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:30,175 INFO L375 BasicCegarLoop]: trace histogram [164, 1, 1, 1] [2018-10-01 01:13:30,175 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:30,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1297757472, now seen corresponding path program 164 times [2018-10-01 01:13:30,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:30,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:30,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:31,588 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:31,588 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:31,595 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:31,688 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:31,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:31,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13530 backedges. 0 proven. 13530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:32,123 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:32,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 167 [2018-10-01 01:13:32,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 01:13:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 01:13:32,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:32,125 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 168 states. [2018-10-01 01:13:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:34,363 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 01:13:34,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:13:34,363 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 167 [2018-10-01 01:13:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:34,364 INFO L225 Difference]: With dead ends: 171 [2018-10-01 01:13:34,364 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 01:13:34,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 01:13:34,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 01:13:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 01:13:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 01:13:34,367 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 167 [2018-10-01 01:13:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:34,367 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 01:13:34,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 01:13:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 01:13:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 01:13:34,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:34,368 INFO L375 BasicCegarLoop]: trace histogram [165, 1, 1, 1] [2018-10-01 01:13:34,368 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:34,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1575779834, now seen corresponding path program 165 times [2018-10-01 01:13:34,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:34,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:35,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:35,652 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:35,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:35,884 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2018-10-01 01:13:35,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:35,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:36,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:36,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 168 [2018-10-01 01:13:36,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 01:13:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 01:13:36,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:36,348 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 169 states. [2018-10-01 01:13:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:37,632 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-10-01 01:13:37,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:13:37,633 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 168 [2018-10-01 01:13:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:37,633 INFO L225 Difference]: With dead ends: 172 [2018-10-01 01:13:37,633 INFO L226 Difference]: Without dead ends: 170 [2018-10-01 01:13:37,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-01 01:13:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2018-10-01 01:13:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 01:13:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2018-10-01 01:13:37,636 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 168 [2018-10-01 01:13:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:37,636 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2018-10-01 01:13:37,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 01:13:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2018-10-01 01:13:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-01 01:13:37,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:37,637 INFO L375 BasicCegarLoop]: trace histogram [166, 1, 1, 1] [2018-10-01 01:13:37,637 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:37,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:37,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1604538464, now seen corresponding path program 166 times [2018-10-01 01:13:37,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:37,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:37,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:37,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:37,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:38,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:38,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:38,988 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:39,099 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:39,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:39,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13861 backedges. 0 proven. 13861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:39,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:39,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 169 [2018-10-01 01:13:39,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 01:13:39,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 01:13:39,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:39,516 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 170 states. [2018-10-01 01:13:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:41,830 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 01:13:41,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 01:13:41,830 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 169 [2018-10-01 01:13:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:41,830 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:13:41,830 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 01:13:41,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:13:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 01:13:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 01:13:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 01:13:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 01:13:41,833 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 169 [2018-10-01 01:13:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:41,833 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 01:13:41,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 01:13:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 01:13:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 01:13:41,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:41,834 INFO L375 BasicCegarLoop]: trace histogram [167, 1, 1, 1] [2018-10-01 01:13:41,834 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:41,834 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1798911302, now seen corresponding path program 167 times [2018-10-01 01:13:41,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:41,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:41,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:41,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:41,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:43,215 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:43,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:43,223 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:43,470 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-01 01:13:43,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:43,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:43,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:43,916 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 170 [2018-10-01 01:13:43,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 01:13:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 01:13:43,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:43,919 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 171 states. [2018-10-01 01:13:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:45,332 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2018-10-01 01:13:45,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 01:13:45,332 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 170 [2018-10-01 01:13:45,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:45,333 INFO L225 Difference]: With dead ends: 174 [2018-10-01 01:13:45,333 INFO L226 Difference]: Without dead ends: 172 [2018-10-01 01:13:45,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-01 01:13:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-01 01:13:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-01 01:13:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2018-10-01 01:13:45,336 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 170 [2018-10-01 01:13:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:45,336 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2018-10-01 01:13:45,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 01:13:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2018-10-01 01:13:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-01 01:13:45,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:45,337 INFO L375 BasicCegarLoop]: trace histogram [168, 1, 1, 1] [2018-10-01 01:13:45,337 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:45,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -68328352, now seen corresponding path program 168 times [2018-10-01 01:13:45,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:45,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:45,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:45,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:45,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:46,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:46,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:46,802 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:47,026 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 01:13:47,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:47,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14196 backedges. 0 proven. 14196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:47,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:47,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 171 [2018-10-01 01:13:47,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 01:13:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 01:13:47,476 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:47,476 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 172 states. [2018-10-01 01:13:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:49,370 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 01:13:49,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 01:13:49,370 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 171 [2018-10-01 01:13:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:49,371 INFO L225 Difference]: With dead ends: 175 [2018-10-01 01:13:49,371 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 01:13:49,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:13:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 01:13:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 01:13:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 01:13:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 01:13:49,374 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 171 [2018-10-01 01:13:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:49,374 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 01:13:49,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 01:13:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 01:13:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 01:13:49,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:49,375 INFO L375 BasicCegarLoop]: trace histogram [169, 1, 1, 1] [2018-10-01 01:13:49,375 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:49,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182778, now seen corresponding path program 169 times [2018-10-01 01:13:49,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:49,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:49,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:49,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:49,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:50,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:50,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:50,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:50,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:51,286 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:51,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 172 [2018-10-01 01:13:51,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 01:13:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 01:13:51,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:51,289 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 173 states. [2018-10-01 01:13:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:53,773 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2018-10-01 01:13:53,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 01:13:53,774 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 172 [2018-10-01 01:13:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:53,774 INFO L225 Difference]: With dead ends: 176 [2018-10-01 01:13:53,774 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 01:13:53,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 01:13:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-10-01 01:13:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-01 01:13:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-10-01 01:13:53,777 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 172 [2018-10-01 01:13:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:53,777 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-10-01 01:13:53,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 01:13:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-10-01 01:13:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 01:13:53,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:53,778 INFO L375 BasicCegarLoop]: trace histogram [170, 1, 1, 1] [2018-10-01 01:13:53,778 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:53,778 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1239160544, now seen corresponding path program 170 times [2018-10-01 01:13:53,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:53,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:53,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:53,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:53,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:55,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:55,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:55,183 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:55,282 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:55,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:55,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14535 backedges. 0 proven. 14535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:55,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:55,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 173 [2018-10-01 01:13:55,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 01:13:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 01:13:55,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:55,758 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 174 states. [2018-10-01 01:13:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:57,270 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 01:13:57,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:13:57,270 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 173 [2018-10-01 01:13:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:57,271 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:13:57,271 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 01:13:57,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:13:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 01:13:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 01:13:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 01:13:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 01:13:57,275 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 173 [2018-10-01 01:13:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:57,275 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 01:13:57,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 01:13:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 01:13:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 01:13:57,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:57,276 INFO L375 BasicCegarLoop]: trace histogram [171, 1, 1, 1] [2018-10-01 01:13:57,276 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:57,276 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:57,276 INFO L82 PathProgramCache]: Analyzing trace with hash 240724934, now seen corresponding path program 171 times [2018-10-01 01:13:57,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:57,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:57,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:57,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:57,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:58,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:58,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:58,758 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:58,991 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 87 check-sat command(s) [2018-10-01 01:13:58,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:58,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:59,423 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:59,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 174 [2018-10-01 01:13:59,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 01:13:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 01:13:59,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:59,426 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 175 states. [2018-10-01 01:14:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:00,895 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-10-01 01:14:00,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 01:14:00,895 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 174 [2018-10-01 01:14:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:00,896 INFO L225 Difference]: With dead ends: 178 [2018-10-01 01:14:00,896 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 01:14:00,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 01:14:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 01:14:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 01:14:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2018-10-01 01:14:00,900 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 174 [2018-10-01 01:14:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:00,900 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2018-10-01 01:14:00,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 01:14:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2018-10-01 01:14:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-01 01:14:00,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:00,901 INFO L375 BasicCegarLoop]: trace histogram [172, 1, 1, 1] [2018-10-01 01:14:00,901 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:00,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:00,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1127465504, now seen corresponding path program 172 times [2018-10-01 01:14:00,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:00,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:00,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:00,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:00,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:02,470 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:02,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:02,478 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:02,591 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:02,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:02,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14878 backedges. 0 proven. 14878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:03,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:03,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 175 [2018-10-01 01:14:03,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 01:14:03,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 01:14:03,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:03,038 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 176 states. [2018-10-01 01:14:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:05,491 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 01:14:05,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 01:14:05,491 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 175 [2018-10-01 01:14:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:05,492 INFO L225 Difference]: With dead ends: 179 [2018-10-01 01:14:05,492 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 01:14:05,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 01:14:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 01:14:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 01:14:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 01:14:05,495 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 175 [2018-10-01 01:14:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:05,495 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 01:14:05,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 01:14:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 01:14:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 01:14:05,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:05,496 INFO L375 BasicCegarLoop]: trace histogram [173, 1, 1, 1] [2018-10-01 01:14:05,496 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:05,496 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:05,496 INFO L82 PathProgramCache]: Analyzing trace with hash -591696122, now seen corresponding path program 173 times [2018-10-01 01:14:05,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:05,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:05,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:05,497 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:05,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:06,945 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:06,945 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:06,952 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:07,224 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 88 check-sat command(s) [2018-10-01 01:14:07,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:07,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:07,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:07,692 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 176 [2018-10-01 01:14:07,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 01:14:07,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 01:14:07,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:07,694 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 177 states. [2018-10-01 01:14:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:10,280 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-10-01 01:14:10,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 01:14:10,281 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 176 [2018-10-01 01:14:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:10,281 INFO L225 Difference]: With dead ends: 180 [2018-10-01 01:14:10,281 INFO L226 Difference]: Without dead ends: 178 [2018-10-01 01:14:10,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-01 01:14:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-01 01:14:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-01 01:14:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-01 01:14:10,284 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 176 [2018-10-01 01:14:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:10,284 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-01 01:14:10,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 01:14:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-01 01:14:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 01:14:10,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:10,285 INFO L375 BasicCegarLoop]: trace histogram [174, 1, 1, 1] [2018-10-01 01:14:10,285 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:10,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1162714464, now seen corresponding path program 174 times [2018-10-01 01:14:10,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:10,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:10,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:10,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:10,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:11,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:11,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:11,778 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:12,000 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 88 check-sat command(s) [2018-10-01 01:14:12,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:12,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15225 backedges. 0 proven. 15225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:12,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:12,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 177 [2018-10-01 01:14:12,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 01:14:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 01:14:12,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:12,638 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 178 states. [2018-10-01 01:14:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:15,255 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 01:14:15,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 01:14:15,256 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 177 [2018-10-01 01:14:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:15,256 INFO L225 Difference]: With dead ends: 181 [2018-10-01 01:14:15,256 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 01:14:15,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 01:14:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 01:14:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 01:14:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 01:14:15,259 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 177 [2018-10-01 01:14:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:15,260 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 01:14:15,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 01:14:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 01:14:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 01:14:15,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:15,260 INFO L375 BasicCegarLoop]: trace histogram [175, 1, 1, 1] [2018-10-01 01:14:15,260 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:15,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:15,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1684413882, now seen corresponding path program 175 times [2018-10-01 01:14:15,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:15,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:15,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:15,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:15,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:16,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:16,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:16,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:16,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:17,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:17,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 178 [2018-10-01 01:14:17,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 01:14:17,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 01:14:17,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:17,265 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 179 states. [2018-10-01 01:14:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:19,421 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2018-10-01 01:14:19,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 01:14:19,421 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 178 [2018-10-01 01:14:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:19,422 INFO L225 Difference]: With dead ends: 182 [2018-10-01 01:14:19,422 INFO L226 Difference]: Without dead ends: 180 [2018-10-01 01:14:19,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-01 01:14:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-10-01 01:14:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 01:14:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-10-01 01:14:19,425 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 178 [2018-10-01 01:14:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:19,425 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-10-01 01:14:19,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 01:14:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-10-01 01:14:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-01 01:14:19,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:19,425 INFO L375 BasicCegarLoop]: trace histogram [176, 1, 1, 1] [2018-10-01 01:14:19,426 INFO L423 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:19,426 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash -677226656, now seen corresponding path program 176 times [2018-10-01 01:14:19,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:19,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:19,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:19,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:19,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:20,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:20,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:20,931 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:21,032 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:21,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:21,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15576 backedges. 0 proven. 15576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:21,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:21,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 179 [2018-10-01 01:14:21,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 01:14:21,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 01:14:21,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:21,481 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 180 states. [2018-10-01 01:14:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:23,593 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 01:14:23,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 01:14:23,594 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 179 [2018-10-01 01:14:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:23,594 INFO L225 Difference]: With dead ends: 183 [2018-10-01 01:14:23,594 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 01:14:23,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 01:14:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 01:14:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 01:14:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 01:14:23,597 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 179 [2018-10-01 01:14:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:23,597 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 01:14:23,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 01:14:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 01:14:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 01:14:23,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:23,598 INFO L375 BasicCegarLoop]: trace histogram [177, 1, 1, 1] [2018-10-01 01:14:23,598 INFO L423 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:23,598 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 480806278, now seen corresponding path program 177 times [2018-10-01 01:14:23,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:23,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:23,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:25,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:25,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:25,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:25,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2018-10-01 01:14:25,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:25,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:25,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:25,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 180 [2018-10-01 01:14:25,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 01:14:25,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 01:14:25,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:25,760 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 181 states. [2018-10-01 01:14:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:27,891 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-10-01 01:14:27,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 01:14:27,891 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 180 [2018-10-01 01:14:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:27,892 INFO L225 Difference]: With dead ends: 184 [2018-10-01 01:14:27,892 INFO L226 Difference]: Without dead ends: 182 [2018-10-01 01:14:27,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:14:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-01 01:14:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-01 01:14:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-01 01:14:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2018-10-01 01:14:27,896 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 180 [2018-10-01 01:14:27,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:27,896 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2018-10-01 01:14:27,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 01:14:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2018-10-01 01:14:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-01 01:14:27,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:27,896 INFO L375 BasicCegarLoop]: trace histogram [178, 1, 1, 1] [2018-10-01 01:14:27,897 INFO L423 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:27,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2020088864, now seen corresponding path program 178 times [2018-10-01 01:14:27,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:27,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:27,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:27,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:29,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:29,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:29,374 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:29,500 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:29,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:29,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15931 backedges. 0 proven. 15931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:29,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:29,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 181 [2018-10-01 01:14:29,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 01:14:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 01:14:29,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:29,950 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 182 states. [2018-10-01 01:14:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:32,209 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 01:14:32,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 01:14:32,209 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 181 [2018-10-01 01:14:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:32,210 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:14:32,210 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 01:14:32,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:14:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 01:14:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 01:14:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 01:14:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 01:14:32,213 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 181 [2018-10-01 01:14:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:32,213 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 01:14:32,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 01:14:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 01:14:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 01:14:32,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:32,214 INFO L375 BasicCegarLoop]: trace histogram [179, 1, 1, 1] [2018-10-01 01:14:32,214 INFO L423 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:32,214 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:32,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1801758522, now seen corresponding path program 179 times [2018-10-01 01:14:32,214 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:32,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:32,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:32,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:32,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:33,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:33,819 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:33,827 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:34,074 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-01 01:14:34,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:34,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:34,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:34,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 182 [2018-10-01 01:14:34,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 01:14:34,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 01:14:34,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:34,550 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 183 states. [2018-10-01 01:14:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:37,067 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2018-10-01 01:14:37,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 01:14:37,067 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 182 [2018-10-01 01:14:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:37,068 INFO L225 Difference]: With dead ends: 186 [2018-10-01 01:14:37,068 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 01:14:37,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 01:14:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-01 01:14:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-01 01:14:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2018-10-01 01:14:37,072 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 182 [2018-10-01 01:14:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:37,072 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2018-10-01 01:14:37,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 01:14:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2018-10-01 01:14:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 01:14:37,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:37,072 INFO L375 BasicCegarLoop]: trace histogram [180, 1, 1, 1] [2018-10-01 01:14:37,073 INFO L423 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:37,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:37,073 INFO L82 PathProgramCache]: Analyzing trace with hash -19943200, now seen corresponding path program 180 times [2018-10-01 01:14:37,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:37,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:37,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:37,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:38,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:38,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:38,754 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:38,987 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 01:14:38,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:38,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16290 backedges. 0 proven. 16290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:39,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:39,435 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 183 [2018-10-01 01:14:39,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 01:14:39,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 01:14:39,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:39,438 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand 184 states. [2018-10-01 01:14:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:42,336 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 01:14:42,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 01:14:42,336 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 183 [2018-10-01 01:14:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:42,336 INFO L225 Difference]: With dead ends: 187 [2018-10-01 01:14:42,336 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 01:14:42,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 01:14:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 01:14:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 01:14:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 01:14:42,341 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 183 [2018-10-01 01:14:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:42,341 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 01:14:42,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 01:14:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 01:14:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 01:14:42,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:42,342 INFO L375 BasicCegarLoop]: trace histogram [181, 1, 1, 1] [2018-10-01 01:14:42,342 INFO L423 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:42,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash -618243066, now seen corresponding path program 181 times [2018-10-01 01:14:42,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:42,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:42,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:42,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:44,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:44,039 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:44,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:44,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:44,634 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:44,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 184 [2018-10-01 01:14:44,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 01:14:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 01:14:44,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:44,637 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 185 states. [2018-10-01 01:14:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:47,451 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2018-10-01 01:14:47,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 01:14:47,452 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 184 [2018-10-01 01:14:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:47,452 INFO L225 Difference]: With dead ends: 188 [2018-10-01 01:14:47,452 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 01:14:47,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:14:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 01:14:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 01:14:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 01:14:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-10-01 01:14:47,455 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 184 [2018-10-01 01:14:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:47,456 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-10-01 01:14:47,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 01:14:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-10-01 01:14:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-01 01:14:47,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:47,456 INFO L375 BasicCegarLoop]: trace histogram [182, 1, 1, 1] [2018-10-01 01:14:47,457 INFO L423 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:47,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1985669728, now seen corresponding path program 182 times [2018-10-01 01:14:47,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:47,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:47,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:47,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:47,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:49,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:49,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:49,173 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:49,281 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:49,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:49,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16653 backedges. 0 proven. 16653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:49,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:49,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 185 [2018-10-01 01:14:49,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 01:14:49,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 01:14:49,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:49,740 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 186 states. [2018-10-01 01:14:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:51,814 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 01:14:51,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 01:14:51,814 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 185 [2018-10-01 01:14:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:51,815 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:14:51,815 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 01:14:51,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:14:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 01:14:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 01:14:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 01:14:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 01:14:51,818 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 185 [2018-10-01 01:14:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:51,818 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 01:14:51,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 01:14:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 01:14:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 01:14:51,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:51,819 INFO L375 BasicCegarLoop]: trace histogram [183, 1, 1, 1] [2018-10-01 01:14:51,819 INFO L423 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:51,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1426223290, now seen corresponding path program 183 times [2018-10-01 01:14:51,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:51,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:51,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:51,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:51,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:53,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:53,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:53,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:53,852 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2018-10-01 01:14:53,852 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:53,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:54,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:54,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 186 [2018-10-01 01:14:54,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 01:14:54,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 01:14:54,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:54,340 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 187 states. [2018-10-01 01:14:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:55,884 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-10-01 01:14:55,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 01:14:55,884 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 186 [2018-10-01 01:14:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:55,884 INFO L225 Difference]: With dead ends: 190 [2018-10-01 01:14:55,885 INFO L226 Difference]: Without dead ends: 188 [2018-10-01 01:14:55,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:14:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-01 01:14:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2018-10-01 01:14:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-10-01 01:14:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2018-10-01 01:14:55,888 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 186 [2018-10-01 01:14:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:55,889 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2018-10-01 01:14:55,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 01:14:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2018-10-01 01:14:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 01:14:55,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:55,889 INFO L375 BasicCegarLoop]: trace histogram [184, 1, 1, 1] [2018-10-01 01:14:55,889 INFO L423 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:55,889 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1263252896, now seen corresponding path program 184 times [2018-10-01 01:14:55,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:55,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:55,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:55,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:55,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:57,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:57,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:57,516 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:57,644 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:57,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:57,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17020 backedges. 0 proven. 17020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:58,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:58,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 187 [2018-10-01 01:14:58,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 01:14:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 01:14:58,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:58,142 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand 188 states. [2018-10-01 01:15:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:00,191 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 01:15:00,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 01:15:00,191 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 187 [2018-10-01 01:15:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:00,192 INFO L225 Difference]: With dead ends: 191 [2018-10-01 01:15:00,192 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 01:15:00,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 01:15:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 01:15:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 01:15:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 01:15:00,195 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 187 [2018-10-01 01:15:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:00,195 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 01:15:00,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 01:15:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 01:15:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 01:15:00,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:00,196 INFO L375 BasicCegarLoop]: trace histogram [185, 1, 1, 1] [2018-10-01 01:15:00,196 INFO L423 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:00,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash -506137978, now seen corresponding path program 185 times [2018-10-01 01:15:00,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:00,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:00,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:00,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:00,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:01,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:01,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:01,726 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:01,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2018-10-01 01:15:01,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:01,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:02,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:02,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 188 [2018-10-01 01:15:02,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 01:15:02,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 01:15:02,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:02,453 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 189 states. [2018-10-01 01:15:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:05,248 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2018-10-01 01:15:05,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 01:15:05,248 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 188 [2018-10-01 01:15:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:05,249 INFO L225 Difference]: With dead ends: 192 [2018-10-01 01:15:05,249 INFO L226 Difference]: Without dead ends: 190 [2018-10-01 01:15:05,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-01 01:15:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-01 01:15:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 01:15:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2018-10-01 01:15:05,252 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 188 [2018-10-01 01:15:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:05,252 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2018-10-01 01:15:05,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 01:15:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2018-10-01 01:15:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-01 01:15:05,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:05,253 INFO L375 BasicCegarLoop]: trace histogram [186, 1, 1, 1] [2018-10-01 01:15:05,253 INFO L423 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:05,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1489588000, now seen corresponding path program 186 times [2018-10-01 01:15:05,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:05,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:05,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:05,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:05,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:06,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:06,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:06,821 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:07,069 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 94 check-sat command(s) [2018-10-01 01:15:07,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:07,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17391 backedges. 0 proven. 17391 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:07,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:07,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 189 [2018-10-01 01:15:07,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 01:15:07,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 01:15:07,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:07,530 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand 190 states. [2018-10-01 01:15:09,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:09,288 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 01:15:09,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 01:15:09,289 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 189 [2018-10-01 01:15:09,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:09,289 INFO L225 Difference]: With dead ends: 193 [2018-10-01 01:15:09,289 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 01:15:09,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 01:15:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 01:15:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 01:15:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 01:15:09,292 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 189 [2018-10-01 01:15:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:09,292 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 01:15:09,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 01:15:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 01:15:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 01:15:09,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:09,293 INFO L375 BasicCegarLoop]: trace histogram [187, 1, 1, 1] [2018-10-01 01:15:09,293 INFO L423 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:09,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1067416122, now seen corresponding path program 187 times [2018-10-01 01:15:09,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:09,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:09,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:10,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:10,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:10,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:10,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:11,411 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:11,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 190 [2018-10-01 01:15:11,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 01:15:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 01:15:11,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:11,414 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 191 states. [2018-10-01 01:15:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:13,790 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2018-10-01 01:15:13,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 01:15:13,790 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 190 [2018-10-01 01:15:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:13,791 INFO L225 Difference]: With dead ends: 194 [2018-10-01 01:15:13,791 INFO L226 Difference]: Without dead ends: 192 [2018-10-01 01:15:13,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-10-01 01:15:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-10-01 01:15:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-10-01 01:15:13,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-10-01 01:15:13,794 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 190 [2018-10-01 01:15:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:13,794 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-10-01 01:15:13,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 01:15:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-10-01 01:15:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-01 01:15:13,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:13,795 INFO L375 BasicCegarLoop]: trace histogram [188, 1, 1, 1] [2018-10-01 01:15:13,795 INFO L423 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:13,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:13,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1269834720, now seen corresponding path program 188 times [2018-10-01 01:15:13,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:13,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:13,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:13,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:13,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:15,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:15,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:15,356 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:15,472 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:15,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:15,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:15,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:15,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 191 [2018-10-01 01:15:15,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 01:15:15,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 01:15:15,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:15,947 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 192 states. [2018-10-01 01:15:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:18,960 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 01:15:18,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 01:15:18,960 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 191 [2018-10-01 01:15:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:18,961 INFO L225 Difference]: With dead ends: 195 [2018-10-01 01:15:18,961 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 01:15:18,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:15:18,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 01:15:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 01:15:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 01:15:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 01:15:18,965 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 191 [2018-10-01 01:15:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:18,966 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 01:15:18,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 01:15:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 01:15:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 01:15:18,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:18,967 INFO L375 BasicCegarLoop]: trace histogram [189, 1, 1, 1] [2018-10-01 01:15:18,967 INFO L423 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:18,967 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:18,967 INFO L82 PathProgramCache]: Analyzing trace with hash 710166790, now seen corresponding path program 189 times [2018-10-01 01:15:18,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:18,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:18,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:18,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:18,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:20,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:20,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:20,704 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:20,977 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 96 check-sat command(s) [2018-10-01 01:15:20,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:20,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:21,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:21,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 192 [2018-10-01 01:15:21,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 01:15:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 01:15:21,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:21,448 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 193 states. [2018-10-01 01:15:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:23,097 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-10-01 01:15:23,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 01:15:23,097 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 192 [2018-10-01 01:15:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:23,097 INFO L225 Difference]: With dead ends: 196 [2018-10-01 01:15:23,098 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 01:15:23,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 01:15:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-01 01:15:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-01 01:15:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2018-10-01 01:15:23,101 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 192 [2018-10-01 01:15:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:23,101 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2018-10-01 01:15:23,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 01:15:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2018-10-01 01:15:23,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 01:15:23,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:23,102 INFO L375 BasicCegarLoop]: trace histogram [190, 1, 1, 1] [2018-10-01 01:15:23,102 INFO L423 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:23,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:23,102 INFO L82 PathProgramCache]: Analyzing trace with hash 540330144, now seen corresponding path program 190 times [2018-10-01 01:15:23,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:23,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:23,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:23,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:23,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:24,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:24,759 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:24,767 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:24,896 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:24,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:24,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:25,366 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:25,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 193 [2018-10-01 01:15:25,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 01:15:25,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 01:15:25,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:25,369 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 194 states. [2018-10-01 01:15:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:28,074 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 01:15:28,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 01:15:28,074 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 193 [2018-10-01 01:15:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:28,075 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:15:28,075 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 01:15:28,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 01:15:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 01:15:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 01:15:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 01:15:28,078 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 193 [2018-10-01 01:15:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:28,078 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 01:15:28,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 01:15:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 01:15:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 01:15:28,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:28,079 INFO L375 BasicCegarLoop]: trace histogram [191, 1, 1, 1] [2018-10-01 01:15:28,079 INFO L423 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:28,079 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:28,079 INFO L82 PathProgramCache]: Analyzing trace with hash -429638586, now seen corresponding path program 191 times [2018-10-01 01:15:28,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:28,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:28,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:28,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:28,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:29,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:29,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:29,830 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:15:30,112 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-01 01:15:30,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:30,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:30,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:30,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 194 [2018-10-01 01:15:30,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 01:15:30,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 01:15:30,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:30,594 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 195 states. [2018-10-01 01:15:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:32,346 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2018-10-01 01:15:32,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 01:15:32,346 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 194 [2018-10-01 01:15:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:32,347 INFO L225 Difference]: With dead ends: 198 [2018-10-01 01:15:32,347 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 01:15:32,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 01:15:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 01:15:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 01:15:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2018-10-01 01:15:32,352 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 194 [2018-10-01 01:15:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:32,352 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2018-10-01 01:15:32,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 01:15:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2018-10-01 01:15:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-01 01:15:32,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:32,353 INFO L375 BasicCegarLoop]: trace histogram [192, 1, 1, 1] [2018-10-01 01:15:32,354 INFO L423 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:32,354 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash -433898144, now seen corresponding path program 192 times [2018-10-01 01:15:32,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:32,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:32,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:32,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:32,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:34,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:34,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:34,149 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:34,418 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 01:15:34,418 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:34,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18528 backedges. 0 proven. 18528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:34,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:34,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 195 [2018-10-01 01:15:34,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 01:15:34,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 01:15:34,900 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:34,900 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand 196 states. [2018-10-01 01:15:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:37,295 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 01:15:37,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 01:15:37,295 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 195 [2018-10-01 01:15:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:37,296 INFO L225 Difference]: With dead ends: 199 [2018-10-01 01:15:37,296 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 01:15:37,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 01:15:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 01:15:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 01:15:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 01:15:37,299 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 195 [2018-10-01 01:15:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:37,299 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 01:15:37,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 01:15:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 01:15:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 01:15:37,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:37,300 INFO L375 BasicCegarLoop]: trace histogram [193, 1, 1, 1] [2018-10-01 01:15:37,300 INFO L423 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:37,300 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:37,301 INFO L82 PathProgramCache]: Analyzing trace with hash -565944442, now seen corresponding path program 193 times [2018-10-01 01:15:37,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:37,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:37,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:37,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:37,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:38,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:38,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:38,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:39,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:39,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:39,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 196 [2018-10-01 01:15:39,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 01:15:39,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 01:15:39,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:39,589 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 197 states. [2018-10-01 01:15:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:42,508 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2018-10-01 01:15:42,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 01:15:42,508 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 196 [2018-10-01 01:15:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:42,509 INFO L225 Difference]: With dead ends: 200 [2018-10-01 01:15:42,509 INFO L226 Difference]: Without dead ends: 198 [2018-10-01 01:15:42,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:42,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-01 01:15:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-10-01 01:15:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-01 01:15:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-10-01 01:15:42,512 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 196 [2018-10-01 01:15:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:42,512 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-10-01 01:15:42,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 01:15:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-10-01 01:15:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 01:15:42,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:42,513 INFO L375 BasicCegarLoop]: trace histogram [194, 1, 1, 1] [2018-10-01 01:15:42,513 INFO L423 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:42,513 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash -364412384, now seen corresponding path program 194 times [2018-10-01 01:15:42,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:42,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:42,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:42,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:42,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:44,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:44,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:44,209 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:44,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:44,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:44,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18915 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:44,850 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:44,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 197 [2018-10-01 01:15:44,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 01:15:44,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 01:15:44,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:44,854 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 198 states. [2018-10-01 01:15:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:46,722 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 01:15:46,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 01:15:46,722 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 197 [2018-10-01 01:15:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:46,723 INFO L225 Difference]: With dead ends: 201 [2018-10-01 01:15:46,723 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 01:15:46,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 01:15:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 01:15:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 01:15:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 01:15:46,726 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 197 [2018-10-01 01:15:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:46,727 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 01:15:46,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 01:15:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 01:15:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 01:15:46,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:46,727 INFO L375 BasicCegarLoop]: trace histogram [195, 1, 1, 1] [2018-10-01 01:15:46,727 INFO L423 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:46,727 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1588114118, now seen corresponding path program 195 times [2018-10-01 01:15:46,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:46,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:46,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:48,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:48,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:48,396 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:48,686 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 99 check-sat command(s) [2018-10-01 01:15:48,687 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:48,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:49,174 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:49,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 198 [2018-10-01 01:15:49,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 01:15:49,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 01:15:49,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:49,178 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 199 states. [2018-10-01 01:15:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:52,547 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-10-01 01:15:52,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 01:15:52,548 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 198 [2018-10-01 01:15:52,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:52,548 INFO L225 Difference]: With dead ends: 202 [2018-10-01 01:15:52,548 INFO L226 Difference]: Without dead ends: 200 [2018-10-01 01:15:52,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:15:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-01 01:15:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-01 01:15:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 01:15:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-01 01:15:52,552 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 198 [2018-10-01 01:15:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:52,553 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-01 01:15:52,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 01:15:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-01 01:15:52,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-01 01:15:52,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:52,553 INFO L375 BasicCegarLoop]: trace histogram [196, 1, 1, 1] [2018-10-01 01:15:52,553 INFO L423 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:52,553 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1986893536, now seen corresponding path program 196 times [2018-10-01 01:15:52,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:52,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:52,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:52,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:54,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:54,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:54,242 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:54,378 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:54,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:54,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 19306 backedges. 0 proven. 19306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:54,974 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:54,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 199 [2018-10-01 01:15:54,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 01:15:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 01:15:54,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:54,977 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 200 states. [2018-10-01 01:15:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:58,105 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 01:15:58,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 01:15:58,105 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 199 [2018-10-01 01:15:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:58,106 INFO L225 Difference]: With dead ends: 203 [2018-10-01 01:15:58,106 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 01:15:58,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:15:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 01:15:58,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 01:15:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 01:15:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 01:15:58,111 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 199 [2018-10-01 01:15:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:58,111 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 01:15:58,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 01:15:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 01:15:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 01:15:58,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:58,112 INFO L375 BasicCegarLoop]: trace histogram [197, 1, 1, 1] [2018-10-01 01:15:58,112 INFO L423 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:58,112 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:58,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1464153606, now seen corresponding path program 197 times [2018-10-01 01:15:58,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:58,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:58,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:58,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:58,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:59,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:59,967 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:59,975 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:00,269 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2018-10-01 01:16:00,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:00,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:00,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:00,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 200 [2018-10-01 01:16:00,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 01:16:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 01:16:00,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:00,788 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 201 states. [2018-10-01 01:16:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:02,696 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2018-10-01 01:16:02,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 01:16:02,696 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 200 [2018-10-01 01:16:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:02,697 INFO L225 Difference]: With dead ends: 204 [2018-10-01 01:16:02,697 INFO L226 Difference]: Without dead ends: 202 [2018-10-01 01:16:02,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-01 01:16:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-01 01:16:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-01 01:16:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2018-10-01 01:16:02,700 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 200 [2018-10-01 01:16:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:02,700 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2018-10-01 01:16:02,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 01:16:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2018-10-01 01:16:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-01 01:16:02,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:02,701 INFO L375 BasicCegarLoop]: trace histogram [198, 1, 1, 1] [2018-10-01 01:16:02,701 INFO L423 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:02,701 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1855882336, now seen corresponding path program 198 times [2018-10-01 01:16:02,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:02,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:02,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:02,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:02,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:04,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:04,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:04,355 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:04,622 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2018-10-01 01:16:04,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:04,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 19701 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:05,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:05,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 201 [2018-10-01 01:16:05,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 01:16:05,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 01:16:05,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:05,224 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand 202 states. [2018-10-01 01:16:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:06,896 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 01:16:06,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 01:16:06,896 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 201 [2018-10-01 01:16:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:06,897 INFO L225 Difference]: With dead ends: 205 [2018-10-01 01:16:06,897 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 01:16:06,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 01:16:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 01:16:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 01:16:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 01:16:06,900 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 201 [2018-10-01 01:16:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:06,900 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 01:16:06,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 01:16:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 01:16:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 01:16:06,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:06,901 INFO L375 BasicCegarLoop]: trace histogram [199, 1, 1, 1] [2018-10-01 01:16:06,901 INFO L423 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:06,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1697781434, now seen corresponding path program 199 times [2018-10-01 01:16:06,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:06,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:06,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:06,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:06,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:08,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:08,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:08,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:08,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:09,256 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:09,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 202 [2018-10-01 01:16:09,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 01:16:09,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 01:16:09,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:09,259 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 203 states. [2018-10-01 01:16:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:11,451 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2018-10-01 01:16:11,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 01:16:11,452 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 202 [2018-10-01 01:16:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:11,452 INFO L225 Difference]: With dead ends: 206 [2018-10-01 01:16:11,452 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 01:16:11,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 01:16:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-10-01 01:16:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-01 01:16:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-10-01 01:16:11,456 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 202 [2018-10-01 01:16:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:11,456 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-10-01 01:16:11,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 01:16:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-10-01 01:16:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 01:16:11,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:11,457 INFO L375 BasicCegarLoop]: trace histogram [200, 1, 1, 1] [2018-10-01 01:16:11,457 INFO L423 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:11,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:11,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1091620768, now seen corresponding path program 200 times [2018-10-01 01:16:11,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:11,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:11,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:11,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:11,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:13,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:13,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:13,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:13,360 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:13,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:13,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20100 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:13,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:13,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 203 [2018-10-01 01:16:13,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 01:16:13,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 01:16:13,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:13,862 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 204 states. [2018-10-01 01:16:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:16,399 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 01:16:16,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 01:16:16,399 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 203 [2018-10-01 01:16:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:16,399 INFO L225 Difference]: With dead ends: 207 [2018-10-01 01:16:16,399 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 01:16:16,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 01:16:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 01:16:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 01:16:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 01:16:16,403 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 203 [2018-10-01 01:16:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:16,403 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 01:16:16,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 01:16:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 01:16:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 01:16:16,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:16,404 INFO L375 BasicCegarLoop]: trace histogram [201, 1, 1, 1] [2018-10-01 01:16:16,404 INFO L423 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:16,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:16,404 INFO L82 PathProgramCache]: Analyzing trace with hash 519490694, now seen corresponding path program 201 times [2018-10-01 01:16:16,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:16,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:16,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:16,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:16,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:18,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:18,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:18,138 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:18,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2018-10-01 01:16:18,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:18,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:18,940 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:18,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 204 [2018-10-01 01:16:18,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 01:16:18,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 01:16:18,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:18,943 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 205 states. [2018-10-01 01:16:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:21,688 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-10-01 01:16:21,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 01:16:21,692 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 204 [2018-10-01 01:16:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:21,693 INFO L225 Difference]: With dead ends: 208 [2018-10-01 01:16:21,693 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 01:16:21,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:21,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 01:16:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 01:16:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 01:16:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2018-10-01 01:16:21,695 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 204 [2018-10-01 01:16:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:21,696 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2018-10-01 01:16:21,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 01:16:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2018-10-01 01:16:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-01 01:16:21,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:21,696 INFO L375 BasicCegarLoop]: trace histogram [202, 1, 1, 1] [2018-10-01 01:16:21,696 INFO L423 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:21,697 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:21,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1075661536, now seen corresponding path program 202 times [2018-10-01 01:16:21,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:21,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:21,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:21,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:21,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:23,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:23,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:23,629 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:23,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:23,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20503 backedges. 0 proven. 20503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:24,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:24,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 205 [2018-10-01 01:16:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 01:16:24,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 01:16:24,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:24,176 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand 206 states. [2018-10-01 01:16:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:27,640 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 01:16:27,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 01:16:27,640 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 205 [2018-10-01 01:16:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:27,640 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:16:27,640 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 01:16:27,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 01:16:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 01:16:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 01:16:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 01:16:27,644 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 205 [2018-10-01 01:16:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:27,644 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 01:16:27,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 01:16:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 01:16:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 01:16:27,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:27,644 INFO L375 BasicCegarLoop]: trace histogram [203, 1, 1, 1] [2018-10-01 01:16:27,645 INFO L423 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:27,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1014226886, now seen corresponding path program 203 times [2018-10-01 01:16:27,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:27,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:27,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:27,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:27,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:29,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:29,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:29,443 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:29,753 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-01 01:16:29,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:29,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:30,260 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:30,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 206 [2018-10-01 01:16:30,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 01:16:30,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 01:16:30,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:30,263 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 207 states. [2018-10-01 01:16:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:33,395 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2018-10-01 01:16:33,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 01:16:33,395 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 206 [2018-10-01 01:16:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:33,396 INFO L225 Difference]: With dead ends: 210 [2018-10-01 01:16:33,396 INFO L226 Difference]: Without dead ends: 208 [2018-10-01 01:16:33,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:16:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-01 01:16:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-01 01:16:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-01 01:16:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2018-10-01 01:16:33,399 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 206 [2018-10-01 01:16:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:33,399 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2018-10-01 01:16:33,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 01:16:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2018-10-01 01:16:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 01:16:33,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:33,400 INFO L375 BasicCegarLoop]: trace histogram [204, 1, 1, 1] [2018-10-01 01:16:33,400 INFO L423 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:33,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1376258528, now seen corresponding path program 204 times [2018-10-01 01:16:33,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:33,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:33,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:35,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:35,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:35,234 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:35,523 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 01:16:35,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:35,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20910 backedges. 0 proven. 20910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:36,086 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:36,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 207 [2018-10-01 01:16:36,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 01:16:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 01:16:36,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:36,090 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand 208 states. [2018-10-01 01:16:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:39,427 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 01:16:39,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 01:16:39,428 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 207 [2018-10-01 01:16:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:39,428 INFO L225 Difference]: With dead ends: 211 [2018-10-01 01:16:39,428 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 01:16:39,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 01:16:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 01:16:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 01:16:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 01:16:39,432 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 207 [2018-10-01 01:16:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:39,432 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 01:16:39,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 01:16:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 01:16:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 01:16:39,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:39,433 INFO L375 BasicCegarLoop]: trace histogram [205, 1, 1, 1] [2018-10-01 01:16:39,433 INFO L423 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:39,433 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:39,433 INFO L82 PathProgramCache]: Analyzing trace with hash -285662458, now seen corresponding path program 205 times [2018-10-01 01:16:39,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:39,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:39,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:39,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:39,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:41,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:41,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:41,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:41,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:42,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:42,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 208 [2018-10-01 01:16:42,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 01:16:42,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 01:16:42,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:42,029 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 209 states. [2018-10-01 01:16:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:44,964 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2018-10-01 01:16:44,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 01:16:44,964 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 208 [2018-10-01 01:16:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:44,964 INFO L225 Difference]: With dead ends: 212 [2018-10-01 01:16:44,964 INFO L226 Difference]: Without dead ends: 210 [2018-10-01 01:16:44,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:16:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-10-01 01:16:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-10-01 01:16:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 01:16:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-10-01 01:16:44,969 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 208 [2018-10-01 01:16:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:44,969 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-10-01 01:16:44,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 01:16:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-10-01 01:16:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-01 01:16:44,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:44,970 INFO L375 BasicCegarLoop]: trace histogram [206, 1, 1, 1] [2018-10-01 01:16:44,971 INFO L423 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:44,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash -265605472, now seen corresponding path program 206 times [2018-10-01 01:16:44,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:44,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:44,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:44,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:44,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:47,363 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:47,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:47,370 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:47,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:47,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:47,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21321 backedges. 0 proven. 21321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:48,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:48,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 209 [2018-10-01 01:16:48,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 01:16:48,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 01:16:48,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:48,051 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 210 states. [2018-10-01 01:16:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:50,384 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 01:16:50,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 01:16:50,384 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 209 [2018-10-01 01:16:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:50,385 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:16:50,385 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 01:16:50,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:16:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 01:16:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 01:16:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 01:16:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 01:16:50,388 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 209 [2018-10-01 01:16:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:50,388 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 01:16:50,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 01:16:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 01:16:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 01:16:50,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:50,389 INFO L375 BasicCegarLoop]: trace histogram [207, 1, 1, 1] [2018-10-01 01:16:50,389 INFO L423 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:50,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash 356161094, now seen corresponding path program 207 times [2018-10-01 01:16:50,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:50,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:50,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:50,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:50,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:52,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:52,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:52,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:52,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 105 check-sat command(s) [2018-10-01 01:16:52,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:52,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:53,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:53,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 210 [2018-10-01 01:16:53,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 01:16:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 01:16:53,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:53,129 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 211 states. [2018-10-01 01:16:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:54,953 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-10-01 01:16:54,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 01:16:54,954 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 210 [2018-10-01 01:16:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:54,954 INFO L225 Difference]: With dead ends: 214 [2018-10-01 01:16:54,954 INFO L226 Difference]: Without dead ends: 212 [2018-10-01 01:16:54,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:16:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-01 01:16:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-01 01:16:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-01 01:16:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2018-10-01 01:16:54,958 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 210 [2018-10-01 01:16:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:54,959 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2018-10-01 01:16:54,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 01:16:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2018-10-01 01:16:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-01 01:16:54,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:54,959 INFO L375 BasicCegarLoop]: trace histogram [208, 1, 1, 1] [2018-10-01 01:16:54,960 INFO L423 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:54,960 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1843911840, now seen corresponding path program 208 times [2018-10-01 01:16:54,960 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:54,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:54,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:54,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:54,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:56,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:56,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:56,893 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:16:57,039 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:16:57,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:57,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21736 backedges. 0 proven. 21736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:57,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:57,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 211 [2018-10-01 01:16:57,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 01:16:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 01:16:57,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:57,622 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 212 states. [2018-10-01 01:16:59,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:59,894 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 01:16:59,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 01:16:59,895 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 211 [2018-10-01 01:16:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:59,895 INFO L225 Difference]: With dead ends: 215 [2018-10-01 01:16:59,895 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 01:16:59,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:16:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 01:16:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 01:16:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 01:16:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 01:16:59,899 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 211 [2018-10-01 01:16:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:59,899 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 01:16:59,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 01:16:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 01:16:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 01:16:59,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:59,900 INFO L375 BasicCegarLoop]: trace histogram [209, 1, 1, 1] [2018-10-01 01:16:59,900 INFO L423 AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:59,900 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1326696058, now seen corresponding path program 209 times [2018-10-01 01:16:59,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:59,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:59,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:59,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:59,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:01,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:01,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:01,827 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:17:02,157 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2018-10-01 01:17:02,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:02,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:02,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:02,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 212 [2018-10-01 01:17:02,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 01:17:02,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 01:17:02,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:02,729 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 213 states. [2018-10-01 01:17:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:06,507 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-01 01:17:06,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 01:17:06,507 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 212 [2018-10-01 01:17:06,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:06,507 INFO L225 Difference]: With dead ends: 216 [2018-10-01 01:17:06,508 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 01:17:06,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 01:17:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-01 01:17:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-01 01:17:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2018-10-01 01:17:06,511 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 212 [2018-10-01 01:17:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:06,511 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2018-10-01 01:17:06,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 01:17:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2018-10-01 01:17:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 01:17:06,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:06,512 INFO L375 BasicCegarLoop]: trace histogram [210, 1, 1, 1] [2018-10-01 01:17:06,512 INFO L423 AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:06,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1822091296, now seen corresponding path program 210 times [2018-10-01 01:17:06,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:06,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:06,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:06,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:06,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:08,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:08,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:08,437 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:17:08,732 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2018-10-01 01:17:08,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:08,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22155 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:09,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:09,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 213 [2018-10-01 01:17:09,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 01:17:09,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 01:17:09,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:09,301 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand 214 states. [2018-10-01 01:17:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:12,976 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 01:17:12,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 01:17:12,977 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 213 [2018-10-01 01:17:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:12,977 INFO L225 Difference]: With dead ends: 217 [2018-10-01 01:17:12,977 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 01:17:12,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:17:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 01:17:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 01:17:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 01:17:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 01:17:12,981 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 213 [2018-10-01 01:17:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:12,981 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 01:17:12,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 01:17:12,981 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 01:17:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 01:17:12,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:12,982 INFO L375 BasicCegarLoop]: trace histogram [211, 1, 1, 1] [2018-10-01 01:17:12,982 INFO L423 AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:12,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:12,982 INFO L82 PathProgramCache]: Analyzing trace with hash 650251462, now seen corresponding path program 211 times [2018-10-01 01:17:12,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:12,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:12,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:12,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:12,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:14,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:14,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:14,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:15,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:15,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:15,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 214 [2018-10-01 01:17:15,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 01:17:15,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 01:17:15,575 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:15,575 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 215 states. [2018-10-01 01:17:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:17,951 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2018-10-01 01:17:17,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 01:17:17,951 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 214 [2018-10-01 01:17:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:17,951 INFO L225 Difference]: With dead ends: 218 [2018-10-01 01:17:17,951 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 01:17:17,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 01:17:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 01:17:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 01:17:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-10-01 01:17:17,955 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 214 [2018-10-01 01:17:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:17,955 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-10-01 01:17:17,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 01:17:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-10-01 01:17:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-01 01:17:17,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:17,956 INFO L375 BasicCegarLoop]: trace histogram [212, 1, 1, 1] [2018-10-01 01:17:17,956 INFO L423 AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:17,956 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1317045024, now seen corresponding path program 212 times [2018-10-01 01:17:17,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:17,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:17,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:17,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:17,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:19,902 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:19,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:19,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:20,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:20,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:20,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 22578 backedges. 0 proven. 22578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:20,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:20,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 215 [2018-10-01 01:17:20,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 01:17:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 01:17:20,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:20,573 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 216 states. [2018-10-01 01:17:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:24,140 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 01:17:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 01:17:24,140 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 215 [2018-10-01 01:17:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:24,141 INFO L225 Difference]: With dead ends: 219 [2018-10-01 01:17:24,141 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 01:17:24,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 01:17:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 01:17:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 01:17:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 01:17:24,144 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 215 [2018-10-01 01:17:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:24,144 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 01:17:24,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 01:17:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 01:17:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 01:17:24,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:24,145 INFO L375 BasicCegarLoop]: trace histogram [213, 1, 1, 1] [2018-10-01 01:17:24,145 INFO L423 AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:24,145 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:24,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2121273350, now seen corresponding path program 213 times [2018-10-01 01:17:24,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:24,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:24,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:24,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:24,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:26,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:26,088 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:26,095 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:17:26,439 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 108 check-sat command(s) [2018-10-01 01:17:26,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:26,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:27,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:27,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 216 [2018-10-01 01:17:27,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 01:17:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 01:17:27,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:27,012 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 217 states. [2018-10-01 01:17:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:29,855 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-10-01 01:17:29,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 01:17:29,855 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 216 [2018-10-01 01:17:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:29,856 INFO L225 Difference]: With dead ends: 220 [2018-10-01 01:17:29,856 INFO L226 Difference]: Without dead ends: 218 [2018-10-01 01:17:29,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-01 01:17:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2018-10-01 01:17:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-10-01 01:17:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2018-10-01 01:17:29,859 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 216 [2018-10-01 01:17:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:29,859 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2018-10-01 01:17:29,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 01:17:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2018-10-01 01:17:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 01:17:29,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:29,860 INFO L375 BasicCegarLoop]: trace histogram [214, 1, 1, 1] [2018-10-01 01:17:29,860 INFO L423 AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:29,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1334960544, now seen corresponding path program 214 times [2018-10-01 01:17:29,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:29,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:29,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:29,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:31,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:31,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:31,813 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:17:31,964 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:17:31,964 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:31,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 23005 backedges. 0 proven. 23005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:32,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:32,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 217 [2018-10-01 01:17:32,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 01:17:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 01:17:32,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:32,565 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand 218 states. [2018-10-01 01:17:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:35,011 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 01:17:35,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 01:17:35,012 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 217 [2018-10-01 01:17:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:35,012 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:17:35,012 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 01:17:35,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 01:17:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 01:17:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 01:17:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 01:17:35,017 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 217 [2018-10-01 01:17:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:35,018 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 01:17:35,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 01:17:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 01:17:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 01:17:35,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:35,019 INFO L375 BasicCegarLoop]: trace histogram [215, 1, 1, 1] [2018-10-01 01:17:35,019 INFO L423 AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:35,019 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1565899962, now seen corresponding path program 215 times [2018-10-01 01:17:35,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:35,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:35,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:35,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:35,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:36,956 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:36,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:36,965 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:17:37,309 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-01 01:17:37,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:37,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:37,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:37,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 218 [2018-10-01 01:17:37,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 01:17:37,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 01:17:37,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:37,887 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 219 states. [2018-10-01 01:17:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:41,984 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2018-10-01 01:17:41,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 01:17:41,985 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 218 [2018-10-01 01:17:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:41,985 INFO L225 Difference]: With dead ends: 222 [2018-10-01 01:17:41,985 INFO L226 Difference]: Without dead ends: 220 [2018-10-01 01:17:41,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-01 01:17:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2018-10-01 01:17:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 01:17:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2018-10-01 01:17:41,989 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 218 [2018-10-01 01:17:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:41,989 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2018-10-01 01:17:41,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 01:17:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2018-10-01 01:17:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-01 01:17:41,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:41,990 INFO L375 BasicCegarLoop]: trace histogram [216, 1, 1, 1] [2018-10-01 01:17:41,990 INFO L423 AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:41,990 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:41,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1298262432, now seen corresponding path program 216 times [2018-10-01 01:17:41,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:41,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:41,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:41,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:41,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:44,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:44,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:44,035 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:17:44,349 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 01:17:44,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:44,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 23436 backedges. 0 proven. 23436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:44,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:44,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 219 [2018-10-01 01:17:44,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 01:17:44,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 01:17:44,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:44,898 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand 220 states. [2018-10-01 01:17:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:47,590 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 01:17:47,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 01:17:47,590 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 219 [2018-10-01 01:17:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:47,590 INFO L225 Difference]: With dead ends: 223 [2018-10-01 01:17:47,590 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 01:17:47,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 01:17:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 01:17:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 01:17:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 01:17:47,594 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 219 [2018-10-01 01:17:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:47,594 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 01:17:47,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 01:17:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 01:17:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 01:17:47,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:47,595 INFO L375 BasicCegarLoop]: trace histogram [217, 1, 1, 1] [2018-10-01 01:17:47,595 INFO L423 AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:47,595 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:47,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1591433594, now seen corresponding path program 217 times [2018-10-01 01:17:47,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:47,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:47,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:47,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:49,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:49,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:49,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:49,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:50,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:50,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 220 [2018-10-01 01:17:50,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 01:17:50,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 01:17:50,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:50,327 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 221 states. [2018-10-01 01:17:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:52,963 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2018-10-01 01:17:52,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 01:17:52,964 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 220 [2018-10-01 01:17:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:52,964 INFO L225 Difference]: With dead ends: 224 [2018-10-01 01:17:52,964 INFO L226 Difference]: Without dead ends: 222 [2018-10-01 01:17:52,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:17:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-01 01:17:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-10-01 01:17:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-10-01 01:17:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-10-01 01:17:52,969 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 220 [2018-10-01 01:17:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:52,969 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-10-01 01:17:52,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 01:17:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-10-01 01:17:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-01 01:17:52,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:52,970 INFO L375 BasicCegarLoop]: trace histogram [218, 1, 1, 1] [2018-10-01 01:17:52,971 INFO L423 AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:52,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:52,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2089805024, now seen corresponding path program 218 times [2018-10-01 01:17:52,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:52,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:52,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:52,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:17:52,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:17:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:55,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:17:55,160 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:17:55,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:17:55,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:17:55,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:17:55,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:17:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 0 proven. 23871 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:17:55,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:17:55,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 221 [2018-10-01 01:17:55,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 01:17:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 01:17:55,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:17:55,881 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 222 states. [2018-10-01 01:17:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:17:59,260 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 01:17:59,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 01:17:59,260 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 221 [2018-10-01 01:17:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:17:59,260 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:17:59,260 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 01:17:59,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:17:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 01:17:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 01:17:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 01:17:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 01:17:59,264 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 221 [2018-10-01 01:17:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:17:59,264 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 01:17:59,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 01:17:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 01:17:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 01:17:59,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:17:59,265 INFO L375 BasicCegarLoop]: trace histogram [219, 1, 1, 1] [2018-10-01 01:17:59,265 INFO L423 AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:17:59,265 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:17:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash -359450170, now seen corresponding path program 219 times [2018-10-01 01:17:59,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:17:59,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:17:59,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:59,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:17:59,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:17:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:01,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:01,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:01,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:18:01,714 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 111 check-sat command(s) [2018-10-01 01:18:01,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:01,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:02,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:02,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 222 [2018-10-01 01:18:02,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 01:18:02,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 01:18:02,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:02,278 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 223 states. [2018-10-01 01:18:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:04,961 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-10-01 01:18:04,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 01:18:04,962 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 222 [2018-10-01 01:18:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:04,962 INFO L225 Difference]: With dead ends: 226 [2018-10-01 01:18:04,962 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 01:18:04,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 01:18:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2018-10-01 01:18:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-01 01:18:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2018-10-01 01:18:04,965 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 222 [2018-10-01 01:18:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:04,966 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2018-10-01 01:18:04,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 01:18:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2018-10-01 01:18:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 01:18:04,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:04,966 INFO L375 BasicCegarLoop]: trace histogram [220, 1, 1, 1] [2018-10-01 01:18:04,967 INFO L423 AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:04,967 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1741942752, now seen corresponding path program 220 times [2018-10-01 01:18:04,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:04,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:04,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:04,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:04,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:06,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:06,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:07,005 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:18:07,167 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:18:07,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:07,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24310 backedges. 0 proven. 24310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:07,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:07,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 223 [2018-10-01 01:18:07,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 01:18:07,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 01:18:07,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:07,764 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand 224 states. [2018-10-01 01:18:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:11,529 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 01:18:11,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 01:18:11,530 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 223 [2018-10-01 01:18:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:11,530 INFO L225 Difference]: With dead ends: 227 [2018-10-01 01:18:11,530 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 01:18:11,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 01:18:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 01:18:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 01:18:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 01:18:11,534 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 223 [2018-10-01 01:18:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:11,534 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 01:18:11,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 01:18:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 01:18:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 01:18:11,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:11,535 INFO L375 BasicCegarLoop]: trace histogram [221, 1, 1, 1] [2018-10-01 01:18:11,535 INFO L423 AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:11,535 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1834353402, now seen corresponding path program 221 times [2018-10-01 01:18:11,535 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:11,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:11,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:11,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:11,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:13,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:13,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:13,751 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:18:14,119 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 112 check-sat command(s) [2018-10-01 01:18:14,120 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:14,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:14,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:14,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 224 [2018-10-01 01:18:14,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 01:18:14,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 01:18:14,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:14,710 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 225 states. [2018-10-01 01:18:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:17,999 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2018-10-01 01:18:17,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 01:18:17,999 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 224 [2018-10-01 01:18:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:18,000 INFO L225 Difference]: With dead ends: 228 [2018-10-01 01:18:18,000 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 01:18:18,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 01:18:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 01:18:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 01:18:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2018-10-01 01:18:18,003 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 224 [2018-10-01 01:18:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:18,003 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2018-10-01 01:18:18,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 01:18:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2018-10-01 01:18:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-01 01:18:18,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:18,004 INFO L375 BasicCegarLoop]: trace histogram [222, 1, 1, 1] [2018-10-01 01:18:18,004 INFO L423 AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:18,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:18,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1030384480, now seen corresponding path program 222 times [2018-10-01 01:18:18,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:18,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:18,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:18,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:18,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:20,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:20,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:20,120 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:18:20,452 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 112 check-sat command(s) [2018-10-01 01:18:20,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:20,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:21,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:21,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 225 [2018-10-01 01:18:21,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 01:18:21,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 01:18:21,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:21,056 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand 226 states. [2018-10-01 01:18:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:23,694 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 01:18:23,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 01:18:23,694 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 225 [2018-10-01 01:18:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:23,694 INFO L225 Difference]: With dead ends: 229 [2018-10-01 01:18:23,694 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 01:18:23,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 01:18:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 01:18:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 01:18:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 01:18:23,698 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 225 [2018-10-01 01:18:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:23,698 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 01:18:23,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 01:18:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 01:18:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 01:18:23,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:23,699 INFO L375 BasicCegarLoop]: trace histogram [223, 1, 1, 1] [2018-10-01 01:18:23,699 INFO L423 AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:23,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:23,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1877151674, now seen corresponding path program 223 times [2018-10-01 01:18:23,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:23,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:23,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:23,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:23,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:25,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:25,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:25,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:26,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:26,611 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:26,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 226 [2018-10-01 01:18:26,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 01:18:26,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 01:18:26,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:26,615 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 227 states. [2018-10-01 01:18:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:29,228 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2018-10-01 01:18:29,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 01:18:29,228 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 226 [2018-10-01 01:18:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:29,229 INFO L225 Difference]: With dead ends: 230 [2018-10-01 01:18:29,229 INFO L226 Difference]: Without dead ends: 228 [2018-10-01 01:18:29,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:18:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-01 01:18:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-10-01 01:18:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-10-01 01:18:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-10-01 01:18:29,232 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 226 [2018-10-01 01:18:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:29,232 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-10-01 01:18:29,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 01:18:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-10-01 01:18:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 01:18:29,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:29,233 INFO L375 BasicCegarLoop]: trace histogram [224, 1, 1, 1] [2018-10-01 01:18:29,233 INFO L423 AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:29,233 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:29,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1937836384, now seen corresponding path program 224 times [2018-10-01 01:18:29,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:29,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:29,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:29,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:18:29,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:31,469 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:31,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:31,476 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:18:31,618 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:18:31,619 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:31,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 25200 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:32,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:32,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 227 [2018-10-01 01:18:32,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 01:18:32,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 01:18:32,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:32,497 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 228 states. [2018-10-01 01:18:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:37,056 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 01:18:37,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 01:18:37,056 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 227 [2018-10-01 01:18:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:37,056 INFO L225 Difference]: With dead ends: 231 [2018-10-01 01:18:37,056 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 01:18:37,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:18:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 01:18:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 01:18:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 01:18:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 01:18:37,060 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 227 [2018-10-01 01:18:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:37,061 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 01:18:37,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 01:18:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 01:18:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 01:18:37,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:37,061 INFO L375 BasicCegarLoop]: trace histogram [225, 1, 1, 1] [2018-10-01 01:18:37,062 INFO L423 AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:37,062 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -56618106, now seen corresponding path program 225 times [2018-10-01 01:18:37,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:37,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:37,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:37,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:37,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:39,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:39,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:39,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:18:39,684 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 114 check-sat command(s) [2018-10-01 01:18:39,684 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:39,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:40,266 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:40,266 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 228 [2018-10-01 01:18:40,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 01:18:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 01:18:40,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:40,270 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 229 states. [2018-10-01 01:18:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:44,068 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-10-01 01:18:44,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 01:18:44,068 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 228 [2018-10-01 01:18:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:44,069 INFO L225 Difference]: With dead ends: 232 [2018-10-01 01:18:44,069 INFO L226 Difference]: Without dead ends: 230 [2018-10-01 01:18:44,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-10-01 01:18:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2018-10-01 01:18:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 01:18:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2018-10-01 01:18:44,072 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 228 [2018-10-01 01:18:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:44,072 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2018-10-01 01:18:44,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 01:18:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2018-10-01 01:18:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-01 01:18:44,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:44,073 INFO L375 BasicCegarLoop]: trace histogram [226, 1, 1, 1] [2018-10-01 01:18:44,073 INFO L423 AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:44,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1755165152, now seen corresponding path program 226 times [2018-10-01 01:18:44,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:44,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:44,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:44,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:44,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:46,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:46,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:46,298 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:18:46,462 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:18:46,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:46,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 25651 backedges. 0 proven. 25651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:47,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:47,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 229 [2018-10-01 01:18:47,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 01:18:47,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 01:18:47,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:47,098 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 230 states. [2018-10-01 01:18:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:51,552 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 01:18:51,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 01:18:51,552 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 229 [2018-10-01 01:18:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:51,553 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:18:51,553 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 01:18:51,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 01:18:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 01:18:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 01:18:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 01:18:51,558 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 229 [2018-10-01 01:18:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:51,558 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 01:18:51,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 01:18:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 01:18:51,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 01:18:51,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:51,559 INFO L375 BasicCegarLoop]: trace histogram [227, 1, 1, 1] [2018-10-01 01:18:51,559 INFO L423 AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:51,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451270, now seen corresponding path program 227 times [2018-10-01 01:18:51,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:51,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:51,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:51,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:51,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:18:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:53,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:18:53,742 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:18:53,751 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:18:54,176 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 115 check-sat command(s) [2018-10-01 01:18:54,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:18:54,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:18:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:18:54,754 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:18:54,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 230 [2018-10-01 01:18:54,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 01:18:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 01:18:54,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:18:54,758 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 231 states. [2018-10-01 01:18:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:18:59,153 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2018-10-01 01:18:59,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 01:18:59,153 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 230 [2018-10-01 01:18:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:18:59,154 INFO L225 Difference]: With dead ends: 234 [2018-10-01 01:18:59,154 INFO L226 Difference]: Without dead ends: 232 [2018-10-01 01:18:59,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:18:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-01 01:18:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2018-10-01 01:18:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-10-01 01:18:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2018-10-01 01:18:59,158 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 230 [2018-10-01 01:18:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:18:59,158 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2018-10-01 01:18:59,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 01:18:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2018-10-01 01:18:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-01 01:18:59,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:18:59,159 INFO L375 BasicCegarLoop]: trace histogram [228, 1, 1, 1] [2018-10-01 01:18:59,159 INFO L423 AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:18:59,159 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:18:59,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1208312544, now seen corresponding path program 228 times [2018-10-01 01:18:59,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:18:59,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:18:59,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:59,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:18:59,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:18:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:01,510 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:01,510 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:01,518 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:19:01,860 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 01:19:01,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:01,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26106 backedges. 0 proven. 26106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:02,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:02,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 231 [2018-10-01 01:19:02,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 01:19:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 01:19:02,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:02,438 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand 232 states. [2018-10-01 01:19:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:06,193 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 01:19:06,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 01:19:06,194 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 231 [2018-10-01 01:19:06,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:06,194 INFO L225 Difference]: With dead ends: 235 [2018-10-01 01:19:06,194 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 01:19:06,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 01:19:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 01:19:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 01:19:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 01:19:06,198 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 231 [2018-10-01 01:19:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:06,199 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 01:19:06,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 01:19:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 01:19:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 01:19:06,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:06,199 INFO L375 BasicCegarLoop]: trace histogram [229, 1, 1, 1] [2018-10-01 01:19:06,200 INFO L423 AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:06,200 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1197020666, now seen corresponding path program 229 times [2018-10-01 01:19:06,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:06,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:06,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:06,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:06,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:08,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:08,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:08,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:08,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:09,272 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:09,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 232 [2018-10-01 01:19:09,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 01:19:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 01:19:09,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:09,277 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 233 states. [2018-10-01 01:19:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:13,268 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2018-10-01 01:19:13,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 01:19:13,268 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 232 [2018-10-01 01:19:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:13,268 INFO L225 Difference]: With dead ends: 236 [2018-10-01 01:19:13,268 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 01:19:13,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 01:19:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-10-01 01:19:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-01 01:19:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-10-01 01:19:13,272 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 232 [2018-10-01 01:19:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:13,273 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-10-01 01:19:13,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 01:19:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-10-01 01:19:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 01:19:13,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:13,273 INFO L375 BasicCegarLoop]: trace histogram [230, 1, 1, 1] [2018-10-01 01:19:13,273 INFO L423 AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:13,274 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1547061152, now seen corresponding path program 230 times [2018-10-01 01:19:13,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:13,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:13,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:13,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:13,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:15,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:15,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:15,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:19:15,791 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:19:15,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:15,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 26565 backedges. 0 proven. 26565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:16,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:16,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 233 [2018-10-01 01:19:16,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 01:19:16,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 01:19:16,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:16,383 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 234 states. [2018-10-01 01:19:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:20,521 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 01:19:20,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 01:19:20,521 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 233 [2018-10-01 01:19:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:20,522 INFO L225 Difference]: With dead ends: 237 [2018-10-01 01:19:20,522 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 01:19:20,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 01:19:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 01:19:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 01:19:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 01:19:20,525 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 233 [2018-10-01 01:19:20,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:20,525 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 01:19:20,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 01:19:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 01:19:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 01:19:20,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:20,526 INFO L375 BasicCegarLoop]: trace histogram [231, 1, 1, 1] [2018-10-01 01:19:20,526 INFO L423 AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:20,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash 714251590, now seen corresponding path program 231 times [2018-10-01 01:19:20,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:20,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:20,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:20,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:20,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:22,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:22,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:22,857 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:19:23,254 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 117 check-sat command(s) [2018-10-01 01:19:23,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:23,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:23,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:23,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 234 [2018-10-01 01:19:23,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 01:19:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 01:19:23,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:23,854 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 235 states. [2018-10-01 01:19:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:28,037 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-10-01 01:19:28,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 01:19:28,037 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 234 [2018-10-01 01:19:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:28,038 INFO L225 Difference]: With dead ends: 238 [2018-10-01 01:19:28,038 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 01:19:28,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:28,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 01:19:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 01:19:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 01:19:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2018-10-01 01:19:28,041 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 234 [2018-10-01 01:19:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:28,042 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2018-10-01 01:19:28,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 01:19:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2018-10-01 01:19:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-01 01:19:28,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:28,042 INFO L375 BasicCegarLoop]: trace histogram [232, 1, 1, 1] [2018-10-01 01:19:28,043 INFO L423 AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:28,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash 666958944, now seen corresponding path program 232 times [2018-10-01 01:19:28,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:28,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:28,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:28,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:28,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:30,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:30,485 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:30,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:19:30,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:19:30,661 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:30,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 27028 backedges. 0 proven. 27028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:31,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:31,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 235 [2018-10-01 01:19:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 01:19:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 01:19:31,269 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:31,269 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand 236 states. [2018-10-01 01:19:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:36,457 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 01:19:36,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 01:19:36,457 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 235 [2018-10-01 01:19:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:36,457 INFO L225 Difference]: With dead ends: 239 [2018-10-01 01:19:36,458 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 01:19:36,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:19:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 01:19:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 01:19:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 01:19:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 01:19:36,461 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 235 [2018-10-01 01:19:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:36,461 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 01:19:36,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 01:19:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 01:19:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 01:19:36,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:36,462 INFO L375 BasicCegarLoop]: trace histogram [233, 1, 1, 1] [2018-10-01 01:19:36,462 INFO L423 AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:36,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:36,462 INFO L82 PathProgramCache]: Analyzing trace with hash -799113082, now seen corresponding path program 233 times [2018-10-01 01:19:36,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:36,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:36,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:36,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:36,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:38,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:38,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:38,724 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:19:39,153 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 118 check-sat command(s) [2018-10-01 01:19:39,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:39,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:39,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:39,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 236 [2018-10-01 01:19:39,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 01:19:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 01:19:39,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:39,758 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 237 states. [2018-10-01 01:19:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:42,962 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2018-10-01 01:19:42,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 01:19:42,962 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 236 [2018-10-01 01:19:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:42,963 INFO L225 Difference]: With dead ends: 240 [2018-10-01 01:19:42,963 INFO L226 Difference]: Without dead ends: 238 [2018-10-01 01:19:42,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:19:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-01 01:19:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2018-10-01 01:19:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-10-01 01:19:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2018-10-01 01:19:42,966 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 236 [2018-10-01 01:19:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:42,966 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2018-10-01 01:19:42,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 01:19:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2018-10-01 01:19:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 01:19:42,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:42,967 INFO L375 BasicCegarLoop]: trace histogram [234, 1, 1, 1] [2018-10-01 01:19:42,967 INFO L423 AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:42,968 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 997294368, now seen corresponding path program 234 times [2018-10-01 01:19:42,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:42,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:42,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:42,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:42,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:45,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:45,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:45,444 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:19:45,808 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 118 check-sat command(s) [2018-10-01 01:19:45,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:45,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27495 backedges. 0 proven. 27495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:46,411 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:46,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 237 [2018-10-01 01:19:46,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 01:19:46,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 01:19:46,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:46,415 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand 238 states. [2018-10-01 01:19:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:49,730 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 01:19:49,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 01:19:49,730 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 237 [2018-10-01 01:19:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:49,730 INFO L225 Difference]: With dead ends: 241 [2018-10-01 01:19:49,730 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 01:19:49,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:19:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 01:19:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 01:19:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 01:19:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 01:19:49,734 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 237 [2018-10-01 01:19:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:49,734 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 01:19:49,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 01:19:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 01:19:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 01:19:49,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:49,735 INFO L375 BasicCegarLoop]: trace histogram [235, 1, 1, 1] [2018-10-01 01:19:49,735 INFO L423 AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:49,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash 851350470, now seen corresponding path program 235 times [2018-10-01 01:19:49,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:49,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:49,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:49,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:19:49,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:52,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:52,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:52,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:52,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:52,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:52,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 238 [2018-10-01 01:19:52,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 01:19:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 01:19:52,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:52,831 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 239 states. [2018-10-01 01:19:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:19:56,179 INFO L93 Difference]: Finished difference Result 242 states and 242 transitions. [2018-10-01 01:19:56,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 01:19:56,179 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 238 [2018-10-01 01:19:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:19:56,179 INFO L225 Difference]: With dead ends: 242 [2018-10-01 01:19:56,180 INFO L226 Difference]: Without dead ends: 240 [2018-10-01 01:19:56,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:19:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-10-01 01:19:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2018-10-01 01:19:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 01:19:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 240 transitions. [2018-10-01 01:19:56,183 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 240 transitions. Word has length 238 [2018-10-01 01:19:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:19:56,183 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 240 transitions. [2018-10-01 01:19:56,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 01:19:56,184 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 240 transitions. [2018-10-01 01:19:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-01 01:19:56,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:19:56,184 INFO L375 BasicCegarLoop]: trace histogram [236, 1, 1, 1] [2018-10-01 01:19:56,184 INFO L423 AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:19:56,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:19:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash 622056928, now seen corresponding path program 236 times [2018-10-01 01:19:56,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:19:56,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:19:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:56,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:19:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:19:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:19:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:58,598 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:19:58,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:19:58,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:19:58,736 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:19:58,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:19:58,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:19:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 27966 backedges. 0 proven. 27966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:19:59,389 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:19:59,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 239 [2018-10-01 01:19:59,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 01:19:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 01:19:59,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:19:59,393 INFO L87 Difference]: Start difference. First operand 240 states and 240 transitions. Second operand 240 states. [2018-10-01 01:20:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:04,405 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 01:20:04,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 01:20:04,405 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 239 [2018-10-01 01:20:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:04,406 INFO L225 Difference]: With dead ends: 243 [2018-10-01 01:20:04,406 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 01:20:04,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:04,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 01:20:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 01:20:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 01:20:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 01:20:04,409 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 239 [2018-10-01 01:20:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:04,410 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 01:20:04,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 01:20:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 01:20:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 01:20:04,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:04,410 INFO L375 BasicCegarLoop]: trace histogram [237, 1, 1, 1] [2018-10-01 01:20:04,411 INFO L423 AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:04,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:04,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2103891718, now seen corresponding path program 237 times [2018-10-01 01:20:04,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:04,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:04,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:04,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:04,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:06,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:06,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:06,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:20:07,348 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 120 check-sat command(s) [2018-10-01 01:20:07,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:07,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:08,005 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:08,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 240 [2018-10-01 01:20:08,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 01:20:08,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 01:20:08,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:08,010 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 241 states. [2018-10-01 01:20:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:12,630 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2018-10-01 01:20:12,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 01:20:12,630 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 240 [2018-10-01 01:20:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:12,630 INFO L225 Difference]: With dead ends: 244 [2018-10-01 01:20:12,630 INFO L226 Difference]: Without dead ends: 242 [2018-10-01 01:20:12,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-01 01:20:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-10-01 01:20:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-10-01 01:20:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2018-10-01 01:20:12,634 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 240 [2018-10-01 01:20:12,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:12,634 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2018-10-01 01:20:12,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 01:20:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2018-10-01 01:20:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-01 01:20:12,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:12,635 INFO L375 BasicCegarLoop]: trace histogram [238, 1, 1, 1] [2018-10-01 01:20:12,635 INFO L423 AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:12,635 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 796129952, now seen corresponding path program 238 times [2018-10-01 01:20:12,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:12,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:12,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:12,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:12,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:15,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:15,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:15,124 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:20:15,296 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:20:15,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:15,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28441 backedges. 0 proven. 28441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:15,998 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:15,999 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 241 [2018-10-01 01:20:15,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 01:20:16,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 01:20:16,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:16,003 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand 242 states. [2018-10-01 01:20:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:19,738 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 01:20:19,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 01:20:19,739 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 241 [2018-10-01 01:20:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:19,739 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:20:19,739 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 01:20:19,739 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 01:20:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 01:20:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 01:20:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 01:20:19,743 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 241 [2018-10-01 01:20:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:19,743 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 01:20:19,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 01:20:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 01:20:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 01:20:19,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:19,744 INFO L375 BasicCegarLoop]: trace histogram [239, 1, 1, 1] [2018-10-01 01:20:19,744 INFO L423 AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:19,744 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:19,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1089779130, now seen corresponding path program 239 times [2018-10-01 01:20:19,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:19,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:19,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:19,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:19,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:22,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:22,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:22,259 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:20:22,682 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-10-01 01:20:22,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:22,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:23,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:23,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 242 [2018-10-01 01:20:23,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 243 states [2018-10-01 01:20:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2018-10-01 01:20:23,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:23,289 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 243 states. [2018-10-01 01:20:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:27,357 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2018-10-01 01:20:27,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 01:20:27,357 INFO L78 Accepts]: Start accepts. Automaton has 243 states. Word has length 242 [2018-10-01 01:20:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:27,358 INFO L225 Difference]: With dead ends: 246 [2018-10-01 01:20:27,358 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 01:20:27,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 01:20:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2018-10-01 01:20:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-01 01:20:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2018-10-01 01:20:27,362 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 242 [2018-10-01 01:20:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:27,362 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2018-10-01 01:20:27,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 243 states. [2018-10-01 01:20:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2018-10-01 01:20:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 01:20:27,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:27,363 INFO L375 BasicCegarLoop]: trace histogram [240, 1, 1, 1] [2018-10-01 01:20:27,363 INFO L423 AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:27,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 576581472, now seen corresponding path program 240 times [2018-10-01 01:20:27,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:27,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:27,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:27,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:27,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:29,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:29,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:29,925 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:20:30,304 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 01:20:30,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:30,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 28920 backedges. 0 proven. 28920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:30,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:30,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [242, 242] total 243 [2018-10-01 01:20:30,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-10-01 01:20:30,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-10-01 01:20:30,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:30,961 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand 244 states. [2018-10-01 01:20:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:35,191 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 01:20:35,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2018-10-01 01:20:35,191 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 243 [2018-10-01 01:20:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:35,192 INFO L225 Difference]: With dead ends: 247 [2018-10-01 01:20:35,192 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 01:20:35,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:20:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 01:20:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 01:20:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 01:20:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 01:20:35,195 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 243 [2018-10-01 01:20:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:35,195 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 01:20:35,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-10-01 01:20:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 01:20:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 01:20:35,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:35,196 INFO L375 BasicCegarLoop]: trace histogram [241, 1, 1, 1] [2018-10-01 01:20:35,196 INFO L423 AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:35,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash 694152582, now seen corresponding path program 241 times [2018-10-01 01:20:35,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:35,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:35,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:35,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:37,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:37,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:37,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:37,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:38,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:38,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 243] total 244 [2018-10-01 01:20:38,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 245 states [2018-10-01 01:20:38,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2018-10-01 01:20:38,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:38,510 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 245 states. [2018-10-01 01:20:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:43,717 INFO L93 Difference]: Finished difference Result 248 states and 248 transitions. [2018-10-01 01:20:43,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2018-10-01 01:20:43,717 INFO L78 Accepts]: Start accepts. Automaton has 245 states. Word has length 244 [2018-10-01 01:20:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:43,718 INFO L225 Difference]: With dead ends: 248 [2018-10-01 01:20:43,718 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 01:20:43,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 01:20:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 01:20:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 01:20:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2018-10-01 01:20:43,721 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 244 [2018-10-01 01:20:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:43,721 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2018-10-01 01:20:43,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 245 states. [2018-10-01 01:20:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2018-10-01 01:20:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-01 01:20:43,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:43,722 INFO L375 BasicCegarLoop]: trace histogram [242, 1, 1, 1] [2018-10-01 01:20:43,722 INFO L423 AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:43,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash 43889696, now seen corresponding path program 242 times [2018-10-01 01:20:43,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:43,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:43,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:43,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:20:43,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:46,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:46,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:46,288 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:20:46,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:20:46,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:46,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 29403 backedges. 0 proven. 29403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:47,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:47,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [244, 244] total 245 [2018-10-01 01:20:47,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 246 states [2018-10-01 01:20:47,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2018-10-01 01:20:47,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:47,135 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand 246 states. [2018-10-01 01:20:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:50,011 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 01:20:50,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2018-10-01 01:20:50,011 INFO L78 Accepts]: Start accepts. Automaton has 246 states. Word has length 245 [2018-10-01 01:20:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:50,011 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:20:50,012 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 01:20:50,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 01:20:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 01:20:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 01:20:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 01:20:50,015 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 245 [2018-10-01 01:20:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:50,016 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 01:20:50,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 246 states. [2018-10-01 01:20:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 01:20:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 01:20:50,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:50,017 INFO L375 BasicCegarLoop]: trace histogram [243, 1, 1, 1] [2018-10-01 01:20:50,017 INFO L423 AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:50,017 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1360576710, now seen corresponding path program 243 times [2018-10-01 01:20:50,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:50,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:50,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:20:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:52,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:20:52,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:20:52,637 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:20:53,074 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 123 check-sat command(s) [2018-10-01 01:20:53,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:20:53,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:20:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:20:53,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:20:53,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [245, 245] total 246 [2018-10-01 01:20:53,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 247 states [2018-10-01 01:20:53,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 247 interpolants. [2018-10-01 01:20:53,704 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:20:53,704 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 247 states. [2018-10-01 01:20:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:20:58,098 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2018-10-01 01:20:58,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2018-10-01 01:20:58,098 INFO L78 Accepts]: Start accepts. Automaton has 247 states. Word has length 246 [2018-10-01 01:20:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:20:58,099 INFO L225 Difference]: With dead ends: 250 [2018-10-01 01:20:58,099 INFO L226 Difference]: Without dead ends: 248 [2018-10-01 01:20:58,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:20:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-01 01:20:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2018-10-01 01:20:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2018-10-01 01:20:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2018-10-01 01:20:58,102 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 246 [2018-10-01 01:20:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:20:58,103 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2018-10-01 01:20:58,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 247 states. [2018-10-01 01:20:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2018-10-01 01:20:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 01:20:58,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:20:58,104 INFO L375 BasicCegarLoop]: trace histogram [244, 1, 1, 1] [2018-10-01 01:20:58,104 INFO L423 AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:20:58,104 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:20:58,104 INFO L82 PathProgramCache]: Analyzing trace with hash -771798816, now seen corresponding path program 244 times [2018-10-01 01:20:58,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:20:58,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:20:58,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:58,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:20:58,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:20:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:00,734 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:00,734 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:00,743 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:21:00,925 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:21:00,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:00,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29890 backedges. 0 proven. 29890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:01,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:01,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [246, 246] total 247 [2018-10-01 01:21:01,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-10-01 01:21:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-10-01 01:21:01,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:01,586 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 248 states. [2018-10-01 01:21:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:05,806 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 01:21:05,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2018-10-01 01:21:05,806 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 247 [2018-10-01 01:21:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:05,807 INFO L225 Difference]: With dead ends: 251 [2018-10-01 01:21:05,807 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 01:21:05,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:21:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 01:21:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 01:21:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 01:21:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 01:21:05,810 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 247 [2018-10-01 01:21:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:05,811 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 01:21:05,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-10-01 01:21:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 01:21:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 01:21:05,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:05,811 INFO L375 BasicCegarLoop]: trace histogram [245, 1, 1, 1] [2018-10-01 01:21:05,812 INFO L423 AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:05,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1844036614, now seen corresponding path program 245 times [2018-10-01 01:21:05,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:05,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:05,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:05,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:05,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:08,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:08,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:08,498 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:21:08,943 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 124 check-sat command(s) [2018-10-01 01:21:08,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:08,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:09,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:09,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [247, 247] total 248 [2018-10-01 01:21:09,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 249 states [2018-10-01 01:21:09,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2018-10-01 01:21:09,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:09,645 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 249 states. [2018-10-01 01:21:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:14,688 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2018-10-01 01:21:14,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2018-10-01 01:21:14,688 INFO L78 Accepts]: Start accepts. Automaton has 249 states. Word has length 248 [2018-10-01 01:21:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:14,689 INFO L225 Difference]: With dead ends: 252 [2018-10-01 01:21:14,689 INFO L226 Difference]: Without dead ends: 250 [2018-10-01 01:21:14,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-10-01 01:21:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2018-10-01 01:21:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 01:21:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2018-10-01 01:21:14,693 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 248 [2018-10-01 01:21:14,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:14,693 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2018-10-01 01:21:14,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 249 states. [2018-10-01 01:21:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2018-10-01 01:21:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-01 01:21:14,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:14,694 INFO L375 BasicCegarLoop]: trace histogram [246, 1, 1, 1] [2018-10-01 01:21:14,694 INFO L423 AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:14,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:14,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1330556320, now seen corresponding path program 246 times [2018-10-01 01:21:14,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:14,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:14,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:14,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:14,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:17,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:17,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:17,350 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:21:17,747 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2018-10-01 01:21:17,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:17,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30381 backedges. 0 proven. 30381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:18,445 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:18,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [248, 248] total 249 [2018-10-01 01:21:18,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 250 states [2018-10-01 01:21:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 250 interpolants. [2018-10-01 01:21:18,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:18,450 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand 250 states. [2018-10-01 01:21:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:24,558 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 01:21:24,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2018-10-01 01:21:24,558 INFO L78 Accepts]: Start accepts. Automaton has 250 states. Word has length 249 [2018-10-01 01:21:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:24,559 INFO L225 Difference]: With dead ends: 253 [2018-10-01 01:21:24,559 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 01:21:24,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 01:21:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 01:21:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 01:21:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 01:21:24,562 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 249 [2018-10-01 01:21:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:24,563 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 01:21:24,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 250 states. [2018-10-01 01:21:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 01:21:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 01:21:24,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:24,563 INFO L375 BasicCegarLoop]: trace histogram [247, 1, 1, 1] [2018-10-01 01:21:24,564 INFO L423 AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:24,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1702430906, now seen corresponding path program 247 times [2018-10-01 01:21:24,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:24,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:24,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:24,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:24,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:27,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:27,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:27,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:27,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:28,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:28,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [249, 249] total 250 [2018-10-01 01:21:28,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 251 states [2018-10-01 01:21:28,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2018-10-01 01:21:28,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:28,067 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 251 states. [2018-10-01 01:21:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:32,970 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2018-10-01 01:21:32,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2018-10-01 01:21:32,970 INFO L78 Accepts]: Start accepts. Automaton has 251 states. Word has length 250 [2018-10-01 01:21:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:32,970 INFO L225 Difference]: With dead ends: 254 [2018-10-01 01:21:32,971 INFO L226 Difference]: Without dead ends: 252 [2018-10-01 01:21:32,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-01 01:21:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-01 01:21:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-01 01:21:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2018-10-01 01:21:32,974 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 250 [2018-10-01 01:21:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:32,975 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2018-10-01 01:21:32,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 251 states. [2018-10-01 01:21:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2018-10-01 01:21:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-01 01:21:32,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:32,975 INFO L375 BasicCegarLoop]: trace histogram [248, 1, 1, 1] [2018-10-01 01:21:32,976 INFO L423 AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:32,976 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1235754400, now seen corresponding path program 248 times [2018-10-01 01:21:32,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:32,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:32,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:32,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:21:32,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:35,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:35,657 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:35,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:21:35,830 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:21:35,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:35,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 30876 backedges. 0 proven. 30876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:36,474 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:36,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [250, 250] total 251 [2018-10-01 01:21:36,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-10-01 01:21:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-10-01 01:21:36,478 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:36,478 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand 252 states. [2018-10-01 01:21:39,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:39,392 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 01:21:39,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2018-10-01 01:21:39,392 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 251 [2018-10-01 01:21:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:39,392 INFO L225 Difference]: With dead ends: 255 [2018-10-01 01:21:39,393 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 01:21:39,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 01:21:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 01:21:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 01:21:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 01:21:39,396 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 251 [2018-10-01 01:21:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:39,396 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 01:21:39,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-10-01 01:21:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 01:21:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 01:21:39,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:39,397 INFO L375 BasicCegarLoop]: trace histogram [249, 1, 1, 1] [2018-10-01 01:21:39,397 INFO L423 AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:39,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 346315398, now seen corresponding path program 249 times [2018-10-01 01:21:39,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:39,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:39,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:42,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:42,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:42,065 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:21:42,525 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 126 check-sat command(s) [2018-10-01 01:21:42,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:42,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:43,246 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:43,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [251, 251] total 252 [2018-10-01 01:21:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 253 states [2018-10-01 01:21:43,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 253 interpolants. [2018-10-01 01:21:43,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:43,250 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 253 states. [2018-10-01 01:21:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:46,401 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2018-10-01 01:21:46,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2018-10-01 01:21:46,401 INFO L78 Accepts]: Start accepts. Automaton has 253 states. Word has length 252 [2018-10-01 01:21:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:46,402 INFO L225 Difference]: With dead ends: 256 [2018-10-01 01:21:46,402 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 01:21:46,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:21:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 01:21:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2018-10-01 01:21:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-01 01:21:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2018-10-01 01:21:46,406 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 252 [2018-10-01 01:21:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:46,406 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2018-10-01 01:21:46,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 253 states. [2018-10-01 01:21:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2018-10-01 01:21:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 01:21:46,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:46,407 INFO L375 BasicCegarLoop]: trace histogram [250, 1, 1, 1] [2018-10-01 01:21:46,407 INFO L423 AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:46,407 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:46,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2145838880, now seen corresponding path program 250 times [2018-10-01 01:21:46,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:46,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:46,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:46,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:46,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:49,203 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:49,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:49,211 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:21:49,400 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:21:49,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:49,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 31375 backedges. 0 proven. 31375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:50,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:50,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [252, 252] total 253 [2018-10-01 01:21:50,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 254 states [2018-10-01 01:21:50,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2018-10-01 01:21:50,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:50,066 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand 254 states. [2018-10-01 01:21:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:21:54,350 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 01:21:54,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 253 states. [2018-10-01 01:21:54,350 INFO L78 Accepts]: Start accepts. Automaton has 254 states. Word has length 253 [2018-10-01 01:21:54,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:21:54,350 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:21:54,351 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 01:21:54,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:21:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 01:21:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 01:21:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 01:21:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 01:21:54,354 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 253 [2018-10-01 01:21:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:21:54,355 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 01:21:54,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 254 states. [2018-10-01 01:21:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 01:21:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 01:21:54,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:21:54,355 INFO L375 BasicCegarLoop]: trace histogram [251, 1, 1, 1] [2018-10-01 01:21:54,356 INFO L423 AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:21:54,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:21:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2096491974, now seen corresponding path program 251 times [2018-10-01 01:21:54,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:21:54,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:21:54,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:54,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:21:54,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:21:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:21:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:57,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:21:57,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:21:57,158 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:21:57,623 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 127 check-sat command(s) [2018-10-01 01:21:57,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:21:57,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:21:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:21:58,312 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:21:58,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [253, 253] total 254 [2018-10-01 01:21:58,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 255 states [2018-10-01 01:21:58,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2018-10-01 01:21:58,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:21:58,317 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 255 states. [2018-10-01 01:22:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:02,648 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-10-01 01:22:02,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2018-10-01 01:22:02,648 INFO L78 Accepts]: Start accepts. Automaton has 255 states. Word has length 254 [2018-10-01 01:22:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:02,649 INFO L225 Difference]: With dead ends: 258 [2018-10-01 01:22:02,649 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 01:22:02,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:22:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 01:22:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 01:22:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 01:22:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 256 transitions. [2018-10-01 01:22:02,652 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 256 transitions. Word has length 254 [2018-10-01 01:22:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:02,653 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 256 transitions. [2018-10-01 01:22:02,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 255 states. [2018-10-01 01:22:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 256 transitions. [2018-10-01 01:22:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-01 01:22:02,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:02,654 INFO L375 BasicCegarLoop]: trace histogram [252, 1, 1, 1] [2018-10-01 01:22:02,654 INFO L423 AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:02,654 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 566737888, now seen corresponding path program 252 times [2018-10-01 01:22:02,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:02,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:02,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:02,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:05,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:05,564 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:05,573 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:22:05,991 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 01:22:05,992 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:22:06,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 31878 backedges. 0 proven. 31878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:06,694 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:06,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [254, 254] total 255 [2018-10-01 01:22:06,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-10-01 01:22:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-10-01 01:22:06,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:06,698 INFO L87 Difference]: Start difference. First operand 256 states and 256 transitions. Second operand 256 states. [2018-10-01 01:22:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:22:12,896 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 01:22:12,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-10-01 01:22:12,896 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 255 [2018-10-01 01:22:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:22:12,897 INFO L225 Difference]: With dead ends: 259 [2018-10-01 01:22:12,897 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 01:22:12,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:22:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 01:22:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 01:22:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 01:22:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 01:22:12,900 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 255 [2018-10-01 01:22:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:22:12,901 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 01:22:12,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-10-01 01:22:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 01:22:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 01:22:12,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:22:12,902 INFO L375 BasicCegarLoop]: trace histogram [253, 1, 1, 1] [2018-10-01 01:22:12,902 INFO L423 AbstractCegarLoop]: === Iteration 254 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:22:12,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:22:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 389001478, now seen corresponding path program 253 times [2018-10-01 01:22:12,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:22:12,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:22:12,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:12,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:22:12,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:22:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:15,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:22:15,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:22:15,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:22:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:22:15,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:22:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:22:16,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:22:16,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255] total 256 [2018-10-01 01:22:16,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 257 states [2018-10-01 01:22:16,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2018-10-01 01:22:16,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:22:16,591 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 257 states. Received shutdown request... [2018-10-01 01:22:21,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 01:22:21,469 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:22:21,474 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:22:21,477 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:22:21 BoogieIcfgContainer [2018-10-01 01:22:21,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:22:21,478 INFO L168 Benchmark]: Toolchain (without parser) took 806069.53 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 266.9 MB). Free memory was 1.5 GB in the beginning and 802.6 MB in the end (delta: 655.2 MB). Peak memory consumption was 922.1 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:21,479 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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. [2018-10-01 01:22:21,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.66 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. [2018-10-01 01:22:21,480 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 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. [2018-10-01 01:22:21,480 INFO L168 Benchmark]: RCFGBuilder took 303.35 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. [2018-10-01 01:22:21,481 INFO L168 Benchmark]: TraceAbstraction took 805689.73 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 266.9 MB). Free memory was 1.4 GB in the beginning and 802.6 MB in the end (delta: 634.1 MB). Peak memory consumption was 900.9 MB. Max. memory is 7.1 GB. [2018-10-01 01:22:21,483 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 0.23 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 44.66 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 25.30 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 303.35 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 805689.73 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 266.9 MB). Free memory was 1.4 GB in the beginning and 802.6 MB in the end (delta: 634.1 MB). Peak memory consumption was 900.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was constructing difference of abstraction (257states) and FLOYD_HOARE automaton (currently 232 states, 257 states before enhancement), while ReachableStatesComputation was computing reachable states (230 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 805.6s OverallTime, 254 OverallIterations, 253 TraceHistogramMax, 388.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 762 SDtfs, 2 SDslu, 12870 SDs, 0 SdLazy, 45596 SolverSat, 625 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65276 GetRequests, 32638 SyntacticMatches, 0 SemanticMatches, 32638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 316.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=253, 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: 0.7s AutomataMinimizationTime, 253 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 3.3s SsaConstructionTime, 55.9s SatisfiabilityAnalysisTime, 342.1s InterpolantComputationTime, 65783 NumberOfCodeBlocks, 65783 NumberOfCodeBlocksAsserted, 8676 NumberOfCheckSat, 65276 ConstructedInterpolants, 0 QuantifiedInterpolants, 55205114 SizeOfPredicates, 506 NumberOfNonLiveVariables, 130801 ConjunctsInSsa, 32637 ConjunctsInUnsatCore, 507 InterpolantComputations, 1 PerfectInterpolantSequences, 0/5462270 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/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_01-22-21-491.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_01-22-21-491.csv Completed graceful shutdown