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/20170304-DifficultPathPrograms/down.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:41:04,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:41:04,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:41:04,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:41:04,708 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 00:41:04,723 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:41:04,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:41:04,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:41:04,724 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:41:04,725 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:41:04,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:41:04,725 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:41:04,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:41:04,726 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:41:04,726 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:41:04,726 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:41:04,726 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:41:04,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:41:04,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:41:04,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:41:04,727 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:41:04,727 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:41:04,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:41:04,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:41:04,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:41:04,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:41:04,728 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:41:04,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:41:04,729 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:41:04,729 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:41:04,729 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:41:04,729 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:41:04,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:41:04,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:41:04,730 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:41:04,730 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:41:04,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:41:04,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:41:04,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:41:04,802 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:41:04,803 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:41:04,804 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/down.i_4.bpl [2018-10-01 00:41:04,804 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/down.i_4.bpl' [2018-10-01 00:41:04,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:41:04,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:41:04,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:41:04,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:41:04,856 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:41:04,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:41:04,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:41:04,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:41:04,897 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:41:04,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... [2018-10-01 00:41:04,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:41:04,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:41:04,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:41:04,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:41:04,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 00:41:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:41:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:41:05,258 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:41:05,259 INFO L202 PluginConnector]: Adding new model down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:41:05 BoogieIcfgContainer [2018-10-01 00:41:05,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:41:05,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:41:05,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:41:05,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:41:05,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:41:04" (1/2) ... [2018-10-01 00:41:05,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b55165 and model type down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:41:05, skipping insertion in model container [2018-10-01 00:41:05,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:41:05" (2/2) ... [2018-10-01 00:41:05,267 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bpl [2018-10-01 00:41:05,277 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:41:05,285 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:41:05,329 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:41:05,330 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:41:05,330 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:41:05,330 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:41:05,330 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:41:05,331 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:41:05,331 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:41:05,331 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:41:05,331 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:41:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-10-01 00:41:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:41:05,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:05,354 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-01 00:41:05,355 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:05,362 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:05,363 INFO L82 PathProgramCache]: Analyzing trace with hash 889539593, now seen corresponding path program 1 times [2018-10-01 00:41:05,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:05,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:05,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:05,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:05,603 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 00:41:05,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:41:05,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-01 00:41:05,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:41:05,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:41:05,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:05,635 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2018-10-01 00:41:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:05,833 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2018-10-01 00:41:05,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:41:05,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-01 00:41:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:05,847 INFO L225 Difference]: With dead ends: 16 [2018-10-01 00:41:05,847 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:41:05,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:41:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:41:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:41:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:41:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-01 00:41:05,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-10-01 00:41:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:05,886 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-01 00:41:05,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:41:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-01 00:41:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:41:05,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:05,887 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-01 00:41:05,888 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:05,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash 198622019, now seen corresponding path program 1 times [2018-10-01 00:41:05,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:05,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:05,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:05,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:05,954 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:41:05,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-01 00:41:05,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:41:05,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:41:05,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:05,956 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-10-01 00:41:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:06,450 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-01 00:41:06,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:41:06,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-01 00:41:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:06,452 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:41:06,452 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:41:06,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:41:06,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:41:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-10-01 00:41:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:41:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-01 00:41:06,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-01 00:41:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:06,459 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-01 00:41:06,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:41:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-01 00:41:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:41:06,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:06,460 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-01 00:41:06,461 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:06,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:06,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1897132479, now seen corresponding path program 1 times [2018-10-01 00:41:06,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:06,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:06,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:06,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:06,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:06,568 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 00:41:06,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:06,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:06,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:41:06,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:41:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:41:06,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:06,731 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-10-01 00:41:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:07,054 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-01 00:41:07,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:41:07,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-01 00:41:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:07,056 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:41:07,056 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:41:07,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:41:07,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:41:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:41:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:41:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-01 00:41:07,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-01 00:41:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:07,065 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-01 00:41:07,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:41:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-01 00:41:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:41:07,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:07,067 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-10-01 00:41:07,068 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:07,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1765329927, now seen corresponding path program 2 times [2018-10-01 00:41:07,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:07,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:07,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:07,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:07,206 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:07,207 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 00:41:07,220 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:07,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:07,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:07,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:07,625 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:07,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-10-01 00:41:07,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:41:07,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:41:07,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:07,627 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-10-01 00:41:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:08,123 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-10-01 00:41:08,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:41:08,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-10-01 00:41:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:08,125 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:41:08,126 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:41:08,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:41:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-01 00:41:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:41:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-01 00:41:08,132 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-10-01 00:41:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:08,132 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-01 00:41:08,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:41:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-10-01 00:41:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:41:08,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:08,134 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-10-01 00:41:08,134 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:08,134 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 29955317, now seen corresponding path program 3 times [2018-10-01 00:41:08,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:08,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:08,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:08,246 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 00:41:08,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:08,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:41:08,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:08,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:08,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:41:08,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:41:08,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:41:08,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:08,389 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-10-01 00:41:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:08,673 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-10-01 00:41:08,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:41:08,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-01 00:41:08,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:08,677 INFO L225 Difference]: With dead ends: 26 [2018-10-01 00:41:08,677 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:41:08,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:41:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:41:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:41:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:41:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-01 00:41:08,683 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-10-01 00:41:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:08,683 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-01 00:41:08,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:41:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-01 00:41:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:41:08,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:08,684 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2018-10-01 00:41:08,685 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:08,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1153652177, now seen corresponding path program 4 times [2018-10-01 00:41:08,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:08,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:08,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:08,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,818 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:08,818 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 00:41:08,826 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:08,854 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:08,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:08,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:09,113 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:09,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2018-10-01 00:41:09,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:41:09,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:41:09,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:09,114 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2018-10-01 00:41:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:09,320 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-10-01 00:41:09,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:41:09,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-01 00:41:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:09,322 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:41:09,322 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:41:09,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:41:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-01 00:41:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:41:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-01 00:41:09,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2018-10-01 00:41:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:09,329 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-01 00:41:09,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:41:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-01 00:41:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:41:09,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:09,330 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-10-01 00:41:09,330 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:09,330 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash -558246485, now seen corresponding path program 5 times [2018-10-01 00:41:09,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:09,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:09,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:09,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:09,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:09,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:09,462 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:09,479 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:41:09,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:09,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:09,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:09,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:41:09,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:41:09,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:41:09,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:09,589 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 10 states. [2018-10-01 00:41:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:09,846 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-10-01 00:41:09,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:41:09,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-01 00:41:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:09,847 INFO L225 Difference]: With dead ends: 32 [2018-10-01 00:41:09,847 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:41:09,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:41:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:41:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:41:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:41:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-01 00:41:09,852 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2018-10-01 00:41:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:09,853 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-01 00:41:09,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:41:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-01 00:41:09,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:41:09,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:09,854 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1] [2018-10-01 00:41:09,854 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:09,854 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash -578011675, now seen corresponding path program 6 times [2018-10-01 00:41:09,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:09,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:09,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:09,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:09,985 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:10,007 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-01 00:41:10,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:10,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:10,109 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2018-10-01 00:41:10,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:41:10,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:41:10,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:10,111 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2018-10-01 00:41:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:10,413 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-10-01 00:41:10,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:41:10,414 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-10-01 00:41:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:10,415 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:41:10,415 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:41:10,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:41:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:41:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-10-01 00:41:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:41:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-01 00:41:10,423 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2018-10-01 00:41:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:10,423 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-01 00:41:10,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:41:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-01 00:41:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:41:10,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:10,424 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-10-01 00:41:10,424 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:10,424 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:10,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1418505247, now seen corresponding path program 7 times [2018-10-01 00:41:10,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:10,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:10,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:10,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:10,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:10,568 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 00:41:10,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:10,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:10,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:41:10,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:41:10,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:41:10,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:10,699 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-10-01 00:41:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:11,270 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-10-01 00:41:11,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:41:11,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-01 00:41:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:11,271 INFO L225 Difference]: With dead ends: 38 [2018-10-01 00:41:11,271 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:41:11,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:41:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:41:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:41:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:41:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-10-01 00:41:11,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22 [2018-10-01 00:41:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:11,278 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-10-01 00:41:11,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:41:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-10-01 00:41:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:41:11,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:11,279 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1] [2018-10-01 00:41:11,279 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:11,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1375531237, now seen corresponding path program 8 times [2018-10-01 00:41:11,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:11,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:11,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:11,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:11,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:11,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:11,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:11,442 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:11,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:11,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:11,552 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:11,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2018-10-01 00:41:11,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:41:11,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:41:11,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:11,553 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states. [2018-10-01 00:41:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:12,172 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-10-01 00:41:12,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:41:12,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2018-10-01 00:41:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:12,173 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:41:12,174 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:41:12,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:41:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:41:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-10-01 00:41:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:41:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-01 00:41:12,180 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-10-01 00:41:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:12,181 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-01 00:41:12,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:41:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-01 00:41:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:41:12,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:12,182 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-10-01 00:41:12,182 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:12,182 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash 964341655, now seen corresponding path program 9 times [2018-10-01 00:41:12,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:12,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:12,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:12,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:12,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:12,376 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 00:41:12,385 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:12,411 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:41:12,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:12,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:12,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:41:12,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:41:12,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:41:12,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:12,529 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2018-10-01 00:41:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:13,085 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-10-01 00:41:13,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:41:13,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-01 00:41:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:13,087 INFO L225 Difference]: With dead ends: 44 [2018-10-01 00:41:13,087 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:41:13,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:41:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:41:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:41:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:41:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-10-01 00:41:13,093 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2018-10-01 00:41:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:13,093 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-10-01 00:41:13,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:41:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-10-01 00:41:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:41:13,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:13,094 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1] [2018-10-01 00:41:13,095 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:13,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1427751471, now seen corresponding path program 10 times [2018-10-01 00:41:13,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:13,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:13,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:13,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:13,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:13,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:13,410 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 00:41:13,418 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:13,457 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:13,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:13,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:13,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:13,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2018-10-01 00:41:13,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:41:13,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:41:13,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:13,747 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 12 states. [2018-10-01 00:41:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:14,426 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-10-01 00:41:14,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:41:14,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2018-10-01 00:41:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:14,427 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:41:14,428 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:41:14,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:41:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-10-01 00:41:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:41:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-10-01 00:41:14,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2018-10-01 00:41:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:14,435 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-10-01 00:41:14,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:41:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-10-01 00:41:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:41:14,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:14,436 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-10-01 00:41:14,436 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:14,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1974662963, now seen corresponding path program 11 times [2018-10-01 00:41:14,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:14,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:14,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:14,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:14,566 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:14,566 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 00:41:14,573 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:14,595 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:41:14,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:14,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:14,694 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:14,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:41:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:41:14,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:41:14,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:14,695 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 16 states. [2018-10-01 00:41:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:15,343 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-10-01 00:41:15,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:41:15,343 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-01 00:41:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:15,344 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:41:15,344 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:41:15,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:41:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:41:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:41:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-10-01 00:41:15,350 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2018-10-01 00:41:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:15,350 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-10-01 00:41:15,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:41:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-10-01 00:41:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:41:15,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:15,351 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1] [2018-10-01 00:41:15,352 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:15,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash 577956359, now seen corresponding path program 12 times [2018-10-01 00:41:15,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:15,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:15,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:15,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:15,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:15,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:15,504 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:15,520 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:15,606 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-01 00:41:15,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:15,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:15,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:15,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2018-10-01 00:41:15,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:41:15,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:41:15,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:15,733 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 13 states. [2018-10-01 00:41:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:16,188 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-10-01 00:41:16,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:41:16,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-10-01 00:41:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:16,189 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:41:16,190 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:41:16,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:41:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:41:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-10-01 00:41:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:41:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-10-01 00:41:16,196 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-10-01 00:41:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:16,197 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-10-01 00:41:16,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:41:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-10-01 00:41:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:41:16,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:16,198 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-10-01 00:41:16,198 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:16,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:16,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1365213059, now seen corresponding path program 13 times [2018-10-01 00:41:16,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:16,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:16,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:16,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:16,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:16,401 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:16,401 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 00:41:16,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:16,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:16,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:16,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:41:16,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:41:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:41:16,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:16,528 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 18 states. [2018-10-01 00:41:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:17,428 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-10-01 00:41:17,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:41:17,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-01 00:41:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:17,429 INFO L225 Difference]: With dead ends: 56 [2018-10-01 00:41:17,430 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:41:17,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:41:17,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:41:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:41:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-10-01 00:41:17,436 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34 [2018-10-01 00:41:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:17,436 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-10-01 00:41:17,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:41:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-10-01 00:41:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:41:17,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:17,437 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1] [2018-10-01 00:41:17,438 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:17,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1260506179, now seen corresponding path program 14 times [2018-10-01 00:41:17,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:17,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:17,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:17,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:17,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:17,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:17,753 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 00:41:17,761 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:17,784 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:17,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:17,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:17,918 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:17,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2018-10-01 00:41:17,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:41:17,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:41:17,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:17,919 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 14 states. [2018-10-01 00:41:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:18,357 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-10-01 00:41:18,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:41:18,358 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2018-10-01 00:41:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:18,359 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:41:18,359 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:41:18,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:41:18,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-01 00:41:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:41:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-10-01 00:41:18,368 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36 [2018-10-01 00:41:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:18,368 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-10-01 00:41:18,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:41:18,368 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-10-01 00:41:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:41:18,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:18,369 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-10-01 00:41:18,369 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:18,369 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash -165727303, now seen corresponding path program 15 times [2018-10-01 00:41:18,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:18,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:18,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:18,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:18,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:19,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:19,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:19,150 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:41:19,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:19,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:19,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:41:19,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:41:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:41:19,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:19,282 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 20 states. [2018-10-01 00:41:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:20,180 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-10-01 00:41:20,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:41:20,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-01 00:41:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:20,180 INFO L225 Difference]: With dead ends: 62 [2018-10-01 00:41:20,181 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:41:20,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:41:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:41:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:41:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-10-01 00:41:20,186 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2018-10-01 00:41:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:20,187 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-10-01 00:41:20,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:41:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-10-01 00:41:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:41:20,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:20,188 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1] [2018-10-01 00:41:20,188 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:20,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1448426227, now seen corresponding path program 16 times [2018-10-01 00:41:20,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:20,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:20,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:20,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:20,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:20,393 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 00:41:20,401 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:20,442 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:20,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:20,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:20,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:20,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2018-10-01 00:41:20,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:41:20,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:41:20,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:20,548 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 15 states. [2018-10-01 00:41:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:21,135 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2018-10-01 00:41:21,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:41:21,136 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-10-01 00:41:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:21,136 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:41:21,136 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:41:21,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:41:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-10-01 00:41:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:41:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-10-01 00:41:21,144 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40 [2018-10-01 00:41:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:21,144 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-10-01 00:41:21,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:41:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-10-01 00:41:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:41:21,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:21,145 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-10-01 00:41:21,146 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:21,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash 368133487, now seen corresponding path program 17 times [2018-10-01 00:41:21,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:21,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:21,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:21,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:21,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:21,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:21,348 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 00:41:21,357 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:21,389 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:41:21,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:21,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:21,494 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:21,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:41:21,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:41:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:41:21,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:21,495 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 22 states. [2018-10-01 00:41:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:22,609 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-10-01 00:41:22,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:41:22,610 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-01 00:41:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:22,610 INFO L225 Difference]: With dead ends: 68 [2018-10-01 00:41:22,610 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:41:22,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:41:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:41:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:41:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-10-01 00:41:22,618 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42 [2018-10-01 00:41:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:22,618 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-10-01 00:41:22,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:41:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-10-01 00:41:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:41:22,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:22,619 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1] [2018-10-01 00:41:22,619 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:22,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:22,620 INFO L82 PathProgramCache]: Analyzing trace with hash -788717655, now seen corresponding path program 18 times [2018-10-01 00:41:22,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:22,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:22,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:22,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:22,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:22,926 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 00:41:22,939 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:22,976 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-10-01 00:41:22,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:22,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,084 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:23,084 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2018-10-01 00:41:23,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:41:23,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:41:23,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:23,085 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 16 states. [2018-10-01 00:41:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:23,563 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-10-01 00:41:23,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:41:23,563 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2018-10-01 00:41:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:23,564 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:41:23,564 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:41:23,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:41:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-10-01 00:41:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:41:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-10-01 00:41:23,572 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2018-10-01 00:41:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:23,572 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-10-01 00:41:23,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:41:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-10-01 00:41:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:41:23,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:23,573 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-10-01 00:41:23,573 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:23,573 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:23,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2043489115, now seen corresponding path program 19 times [2018-10-01 00:41:23,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:23,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:23,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:23,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:23,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:23,772 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 00:41:23,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:23,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,965 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:23,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:41:23,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:41:23,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:41:23,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:23,966 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 24 states. [2018-10-01 00:41:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:25,072 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-10-01 00:41:25,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:41:25,072 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-01 00:41:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:25,072 INFO L225 Difference]: With dead ends: 74 [2018-10-01 00:41:25,072 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:41:25,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:41:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:41:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:41:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-10-01 00:41:25,079 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46 [2018-10-01 00:41:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:25,079 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-10-01 00:41:25,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:41:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-10-01 00:41:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:41:25,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:25,080 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1] [2018-10-01 00:41:25,080 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:25,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:25,081 INFO L82 PathProgramCache]: Analyzing trace with hash -957152801, now seen corresponding path program 20 times [2018-10-01 00:41:25,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:25,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:25,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:25,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:26,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:26,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:26,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:26,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:26,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,426 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:26,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2018-10-01 00:41:26,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:41:26,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:41:26,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:26,427 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 17 states. [2018-10-01 00:41:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:26,899 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-10-01 00:41:26,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:41:26,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2018-10-01 00:41:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:26,903 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:41:26,903 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:41:26,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:41:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:41:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-10-01 00:41:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:41:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-10-01 00:41:26,913 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-10-01 00:41:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:26,913 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-10-01 00:41:26,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:41:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-10-01 00:41:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:41:26,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:26,914 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-10-01 00:41:26,914 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:26,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash -700907173, now seen corresponding path program 21 times [2018-10-01 00:41:26,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:26,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:26,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:26,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:27,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:27,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:27,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:27,403 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:41:27,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:27,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:27,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:27,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:41:27,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:41:27,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:41:27,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:27,542 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2018-10-01 00:41:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:28,877 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-10-01 00:41:28,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:41:28,877 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-01 00:41:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:28,878 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:41:28,878 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:41:28,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:41:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:41:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:41:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-10-01 00:41:28,885 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2018-10-01 00:41:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:28,885 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-10-01 00:41:28,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:41:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-10-01 00:41:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:41:28,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:28,886 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1] [2018-10-01 00:41:28,886 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:28,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:28,886 INFO L82 PathProgramCache]: Analyzing trace with hash 877396373, now seen corresponding path program 22 times [2018-10-01 00:41:28,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:28,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:28,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:28,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:28,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:29,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:29,064 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 00:41:29,072 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:29,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:29,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:29,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:29,220 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:29,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17 [2018-10-01 00:41:29,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:41:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:41:29,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:29,221 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 18 states. [2018-10-01 00:41:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:29,774 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-10-01 00:41:29,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:41:29,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2018-10-01 00:41:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:29,776 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:41:29,776 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:41:29,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:41:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:41:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-10-01 00:41:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:41:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-10-01 00:41:29,787 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52 [2018-10-01 00:41:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:29,788 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-10-01 00:41:29,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:41:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-10-01 00:41:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:41:29,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:29,789 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-10-01 00:41:29,789 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:29,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1364257681, now seen corresponding path program 23 times [2018-10-01 00:41:29,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:29,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:29,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:29,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:29,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:30,141 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 00:41:30,148 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:30,185 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:41:30,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:30,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:30,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:41:30,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:41:30,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:41:30,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:30,295 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 28 states. [2018-10-01 00:41:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:31,969 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-10-01 00:41:31,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:41:31,969 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-01 00:41:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:31,970 INFO L225 Difference]: With dead ends: 86 [2018-10-01 00:41:31,970 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:41:31,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:41:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:41:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:41:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-10-01 00:41:31,976 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54 [2018-10-01 00:41:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:31,977 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-10-01 00:41:31,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:41:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-10-01 00:41:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:41:31,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:31,977 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1] [2018-10-01 00:41:31,978 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:31,978 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1897217739, now seen corresponding path program 24 times [2018-10-01 00:41:31,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:31,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:31,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:32,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:32,399 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 00:41:32,407 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:32,451 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-01 00:41:32,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:32,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:32,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:32,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2018-10-01 00:41:32,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:41:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:41:32,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:32,572 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 19 states. [2018-10-01 00:41:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:33,246 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-10-01 00:41:33,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:41:33,246 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2018-10-01 00:41:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:33,247 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:41:33,247 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:41:33,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:41:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-01 00:41:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:41:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-10-01 00:41:33,254 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2018-10-01 00:41:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:33,255 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-10-01 00:41:33,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:41:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-10-01 00:41:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:41:33,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:33,256 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-10-01 00:41:33,256 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:33,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2134920377, now seen corresponding path program 25 times [2018-10-01 00:41:33,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:33,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:33,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:33,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:33,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:33,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:33,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:33,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:33,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:33,660 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:33,660 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:41:33,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:41:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:41:33,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:33,661 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 30 states. [2018-10-01 00:41:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:35,246 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2018-10-01 00:41:35,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:41:35,246 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-01 00:41:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:35,247 INFO L225 Difference]: With dead ends: 92 [2018-10-01 00:41:35,247 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:41:35,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:41:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:41:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:41:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-10-01 00:41:35,254 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58 [2018-10-01 00:41:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:35,254 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-10-01 00:41:35,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:41:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-10-01 00:41:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:41:35,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:35,255 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1] [2018-10-01 00:41:35,255 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:35,255 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1286350463, now seen corresponding path program 26 times [2018-10-01 00:41:35,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:35,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:35,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:35,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:35,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:35,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:35,662 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 00:41:35,669 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:35,707 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:35,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:35,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:35,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:35,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2018-10-01 00:41:35,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:41:35,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:41:35,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:35,876 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 20 states. [2018-10-01 00:41:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:36,689 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2018-10-01 00:41:36,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:41:36,689 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2018-10-01 00:41:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:36,690 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:41:36,690 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:41:36,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:41:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2018-10-01 00:41:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:41:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-10-01 00:41:36,698 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60 [2018-10-01 00:41:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:36,698 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-10-01 00:41:36,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:41:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-10-01 00:41:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:41:36,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:36,699 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-10-01 00:41:36,699 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:36,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:36,700 INFO L82 PathProgramCache]: Analyzing trace with hash 767719549, now seen corresponding path program 27 times [2018-10-01 00:41:36,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:36,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:36,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:36,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:36,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:36,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:36,966 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 00:41:36,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:37,038 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:41:37,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:37,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:37,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:37,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:41:37,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:41:37,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:41:37,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:37,200 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 32 states. [2018-10-01 00:41:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:38,720 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2018-10-01 00:41:38,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:41:38,720 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-01 00:41:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:38,721 INFO L225 Difference]: With dead ends: 98 [2018-10-01 00:41:38,721 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:41:38,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:41:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:41:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:41:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-10-01 00:41:38,730 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2018-10-01 00:41:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:38,730 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-10-01 00:41:38,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:41:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-10-01 00:41:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:41:38,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:38,731 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1] [2018-10-01 00:41:38,732 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:38,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:38,732 INFO L82 PathProgramCache]: Analyzing trace with hash 285536695, now seen corresponding path program 28 times [2018-10-01 00:41:38,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:38,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:38,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:38,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:38,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:39,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:39,084 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 00:41:39,093 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:39,131 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:39,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:39,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:39,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:39,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2018-10-01 00:41:39,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:41:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:41:39,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:39,258 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 21 states. [2018-10-01 00:41:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:39,943 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-10-01 00:41:39,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:41:39,943 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2018-10-01 00:41:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:39,944 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:41:39,944 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:41:39,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:41:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-10-01 00:41:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:41:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-10-01 00:41:39,953 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2018-10-01 00:41:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:39,953 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-10-01 00:41:39,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:41:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-10-01 00:41:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:41:39,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:39,954 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-10-01 00:41:39,954 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:39,954 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:39,954 INFO L82 PathProgramCache]: Analyzing trace with hash -477209805, now seen corresponding path program 29 times [2018-10-01 00:41:39,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:39,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:39,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:39,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:40,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:40,258 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:40,309 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:41:40,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:40,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,436 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:40,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:41:40,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:41:40,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:41:40,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:40,437 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 34 states. [2018-10-01 00:41:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:42,683 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2018-10-01 00:41:42,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:41:42,683 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-01 00:41:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:42,684 INFO L225 Difference]: With dead ends: 104 [2018-10-01 00:41:42,684 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:41:42,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:41:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:41:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:41:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-10-01 00:41:42,696 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66 [2018-10-01 00:41:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:42,696 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-10-01 00:41:42,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:41:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-10-01 00:41:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:41:42,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:42,697 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1] [2018-10-01 00:41:42,697 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:42,697 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:42,698 INFO L82 PathProgramCache]: Analyzing trace with hash 35497837, now seen corresponding path program 30 times [2018-10-01 00:41:42,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:42,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:42,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:42,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:42,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:43,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:43,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:43,065 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:43,310 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2018-10-01 00:41:43,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:43,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:43,620 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:43,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2018-10-01 00:41:43,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:41:43,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:41:43,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:43,621 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 22 states. [2018-10-01 00:41:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:44,475 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2018-10-01 00:41:44,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:41:44,475 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68 [2018-10-01 00:41:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:44,476 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:41:44,476 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:41:44,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:41:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2018-10-01 00:41:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:41:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-10-01 00:41:44,492 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2018-10-01 00:41:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:44,492 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-10-01 00:41:44,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:41:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-10-01 00:41:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:41:44,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:44,493 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-10-01 00:41:44,493 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:44,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:44,494 INFO L82 PathProgramCache]: Analyzing trace with hash -246383767, now seen corresponding path program 31 times [2018-10-01 00:41:44,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:44,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:44,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:44,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:44,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:45,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:45,011 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 00:41:45,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:45,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:45,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:45,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:41:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:41:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:41:45,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:45,227 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 36 states. [2018-10-01 00:41:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:47,589 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2018-10-01 00:41:47,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:41:47,589 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-01 00:41:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:47,590 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:41:47,590 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:41:47,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:41:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:41:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:41:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-10-01 00:41:47,599 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70 [2018-10-01 00:41:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:47,599 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-10-01 00:41:47,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:41:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-10-01 00:41:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:41:47,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:47,600 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1] [2018-10-01 00:41:47,600 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:47,600 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1653283491, now seen corresponding path program 32 times [2018-10-01 00:41:47,600 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:47,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:47,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:47,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:47,869 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:47,869 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 00:41:47,877 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:47,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:47,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:47,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:48,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2018-10-01 00:41:48,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:41:48,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:41:48,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:48,067 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 23 states. [2018-10-01 00:41:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:48,823 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-10-01 00:41:48,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:41:48,823 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2018-10-01 00:41:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:48,824 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:41:48,824 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:41:48,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:41:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-10-01 00:41:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:41:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-10-01 00:41:48,835 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72 [2018-10-01 00:41:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:48,835 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-10-01 00:41:48,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:41:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-10-01 00:41:48,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:41:48,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:48,836 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-10-01 00:41:48,836 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:48,836 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash -332531425, now seen corresponding path program 33 times [2018-10-01 00:41:48,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:48,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:48,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:48,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:48,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:49,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:49,336 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 00:41:49,343 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:49,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:41:49,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:49,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:49,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:49,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:41:49,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:41:49,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:41:49,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:49,969 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 38 states. [2018-10-01 00:41:52,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:52,525 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2018-10-01 00:41:52,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:41:52,525 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-01 00:41:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:52,526 INFO L225 Difference]: With dead ends: 116 [2018-10-01 00:41:52,526 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:41:52,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:41:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:41:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:41:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:41:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-10-01 00:41:52,537 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2018-10-01 00:41:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:52,537 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-10-01 00:41:52,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:41:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-10-01 00:41:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:41:52,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:52,538 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1] [2018-10-01 00:41:52,539 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:52,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:52,539 INFO L82 PathProgramCache]: Analyzing trace with hash -198022311, now seen corresponding path program 34 times [2018-10-01 00:41:52,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:52,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:52,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:52,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:52,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:52,758 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 00:41:52,767 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:52,810 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:52,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:52,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:52,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:52,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23 [2018-10-01 00:41:52,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:41:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:41:52,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:52,962 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 24 states. [2018-10-01 00:41:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:53,723 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2018-10-01 00:41:53,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:41:53,723 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 76 [2018-10-01 00:41:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:53,725 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:41:53,725 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:41:53,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:41:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:41:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-01 00:41:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:41:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-10-01 00:41:53,736 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76 [2018-10-01 00:41:53,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:53,737 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-10-01 00:41:53,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:41:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-10-01 00:41:53,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:41:53,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:53,737 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-10-01 00:41:53,737 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:53,738 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1320946603, now seen corresponding path program 35 times [2018-10-01 00:41:53,738 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:53,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:53,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:53,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:54,127 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 00:41:54,136 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:54,189 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:41:54,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:54,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:54,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:41:54,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:41:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:41:54,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:54,361 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 40 states. [2018-10-01 00:41:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:57,213 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2018-10-01 00:41:57,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:41:57,213 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-01 00:41:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:57,214 INFO L225 Difference]: With dead ends: 122 [2018-10-01 00:41:57,214 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:41:57,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:41:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:41:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:41:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-10-01 00:41:57,228 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78 [2018-10-01 00:41:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:57,229 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-10-01 00:41:57,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:41:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-10-01 00:41:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:41:57,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:57,230 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1] [2018-10-01 00:41:57,230 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:57,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1626388879, now seen corresponding path program 36 times [2018-10-01 00:41:57,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:57,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:57,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:57,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:58,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:58,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:41:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:58,178 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-01 00:41:58,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:58,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:58,337 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:58,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2018-10-01 00:41:58,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:41:58,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:41:58,338 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:58,338 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 25 states. [2018-10-01 00:41:59,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:59,098 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-10-01 00:41:59,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:41:59,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2018-10-01 00:41:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:59,099 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:41:59,099 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:41:59,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:41:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:41:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-10-01 00:41:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:41:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-10-01 00:41:59,112 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2018-10-01 00:41:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:59,113 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-10-01 00:41:59,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:41:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-10-01 00:41:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:41:59,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:59,113 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-10-01 00:41:59,113 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:59,114 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash -408449781, now seen corresponding path program 37 times [2018-10-01 00:41:59,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:59,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:59,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:59,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:59,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:59,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:59,457 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 00:41:59,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:59,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:59,692 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:59,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:41:59,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:41:59,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:41:59,693 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:59,693 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 42 states. [2018-10-01 00:42:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:01,315 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2018-10-01 00:42:01,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:42:01,316 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-01 00:42:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:01,316 INFO L225 Difference]: With dead ends: 128 [2018-10-01 00:42:01,316 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:42:01,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:42:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:42:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:42:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:42:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-10-01 00:42:01,328 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82 [2018-10-01 00:42:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:01,328 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-10-01 00:42:01,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:42:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-10-01 00:42:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:42:01,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:01,328 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1] [2018-10-01 00:42:01,329 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:01,329 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:01,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1130683067, now seen corresponding path program 38 times [2018-10-01 00:42:01,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:01,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:01,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:01,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:01,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:01,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:01,595 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 00:42:01,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:01,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:01,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:01,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:01,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:01,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2018-10-01 00:42:01,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:42:01,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:42:01,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:01,832 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 26 states. [2018-10-01 00:42:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:03,041 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-10-01 00:42:03,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:42:03,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84 [2018-10-01 00:42:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:03,042 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:42:03,043 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:42:03,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:42:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-10-01 00:42:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:42:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-10-01 00:42:03,057 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2018-10-01 00:42:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:03,057 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-10-01 00:42:03,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:42:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-10-01 00:42:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:42:03,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:03,058 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-10-01 00:42:03,058 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:03,058 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash 40231745, now seen corresponding path program 39 times [2018-10-01 00:42:03,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:03,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:03,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:03,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:03,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:03,598 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:03,599 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 00:42:03,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:03,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:42:03,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:03,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:03,845 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:03,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:42:03,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:42:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:42:03,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:03,846 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 44 states. [2018-10-01 00:42:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:07,667 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2018-10-01 00:42:07,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:42:07,667 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-01 00:42:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:07,668 INFO L225 Difference]: With dead ends: 134 [2018-10-01 00:42:07,668 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:42:07,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:42:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:42:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:42:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-10-01 00:42:07,680 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2018-10-01 00:42:07,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:07,681 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-10-01 00:42:07,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:42:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-10-01 00:42:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:42:07,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:07,681 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1] [2018-10-01 00:42:07,681 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:07,682 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2030121349, now seen corresponding path program 40 times [2018-10-01 00:42:07,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:07,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:07,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:07,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:07,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:08,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:08,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:42:08,061 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:08,112 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:08,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:08,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:08,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:08,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26 [2018-10-01 00:42:08,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:42:08,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:42:08,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:08,294 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 27 states. [2018-10-01 00:42:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:09,269 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-10-01 00:42:09,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:42:09,270 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 88 [2018-10-01 00:42:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:09,270 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:42:09,270 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:42:09,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:42:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2018-10-01 00:42:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:42:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-10-01 00:42:09,285 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2018-10-01 00:42:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:09,285 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-10-01 00:42:09,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:42:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-10-01 00:42:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:42:09,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:09,286 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-10-01 00:42:09,286 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:09,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:09,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1031530761, now seen corresponding path program 41 times [2018-10-01 00:42:09,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:09,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:09,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:09,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:09,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:09,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:09,903 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 00:42:09,911 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:09,977 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:42:09,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:09,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:10,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:10,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:42:10,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:42:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:42:10,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:10,172 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 46 states. [2018-10-01 00:42:13,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:13,934 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2018-10-01 00:42:13,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:42:13,934 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-01 00:42:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:13,935 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:42:13,935 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:42:13,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:42:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:42:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:42:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2018-10-01 00:42:13,950 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90 [2018-10-01 00:42:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:13,950 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2018-10-01 00:42:13,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:42:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2018-10-01 00:42:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:42:13,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:13,951 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1] [2018-10-01 00:42:13,951 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:13,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:13,952 INFO L82 PathProgramCache]: Analyzing trace with hash 769709361, now seen corresponding path program 42 times [2018-10-01 00:42:13,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:13,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:13,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:13,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:14,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:14,365 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 00:42:14,372 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:14,439 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2018-10-01 00:42:14,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:14,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:14,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:14,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2018-10-01 00:42:14,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:42:14,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:42:14,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:14,627 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 28 states. [2018-10-01 00:42:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:15,651 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-10-01 00:42:15,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:42:15,652 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 92 [2018-10-01 00:42:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:15,653 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:42:15,653 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:42:15,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:42:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-10-01 00:42:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:42:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-10-01 00:42:15,668 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2018-10-01 00:42:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:15,668 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-10-01 00:42:15,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:42:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-10-01 00:42:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:42:15,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:15,669 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-10-01 00:42:15,669 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:15,669 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:15,669 INFO L82 PathProgramCache]: Analyzing trace with hash 956254253, now seen corresponding path program 43 times [2018-10-01 00:42:15,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:15,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:15,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:15,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:16,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:16,143 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 00:42:16,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:16,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:17,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:17,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:42:17,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:42:17,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:42:17,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:17,523 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 48 states. [2018-10-01 00:42:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:21,557 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2018-10-01 00:42:21,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:42:21,557 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-01 00:42:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:21,558 INFO L225 Difference]: With dead ends: 146 [2018-10-01 00:42:21,558 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:42:21,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:42:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:42:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:42:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:42:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-10-01 00:42:21,572 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94 [2018-10-01 00:42:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:21,572 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-10-01 00:42:21,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:42:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-10-01 00:42:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:42:21,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:21,573 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1] [2018-10-01 00:42:21,574 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:21,574 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash 251550055, now seen corresponding path program 44 times [2018-10-01 00:42:21,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:21,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:21,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:21,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:21,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:21,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:21,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:42:21,919 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:21,974 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:21,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:21,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:22,157 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:22,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2018-10-01 00:42:22,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:42:22,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:42:22,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:22,158 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 29 states. [2018-10-01 00:42:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:23,376 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2018-10-01 00:42:23,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:42:23,376 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 96 [2018-10-01 00:42:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:23,377 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:42:23,378 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:42:23,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:42:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:42:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-01 00:42:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:42:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-10-01 00:42:23,393 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96 [2018-10-01 00:42:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:23,394 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-10-01 00:42:23,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:42:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-10-01 00:42:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:42:23,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:23,395 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-10-01 00:42:23,395 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:23,395 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1221367523, now seen corresponding path program 45 times [2018-10-01 00:42:23,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:23,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:23,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:24,298 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:24,298 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 00:42:24,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:24,376 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:42:24,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:24,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:24,558 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:24,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:42:24,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:42:24,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:42:24,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:24,559 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2018-10-01 00:42:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:28,971 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2018-10-01 00:42:28,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:42:28,971 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-01 00:42:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:28,972 INFO L225 Difference]: With dead ends: 152 [2018-10-01 00:42:28,972 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:42:28,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:42:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:42:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:42:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:42:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-10-01 00:42:28,990 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2018-10-01 00:42:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:28,990 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-10-01 00:42:28,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:42:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-10-01 00:42:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:42:28,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:28,991 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1] [2018-10-01 00:42:28,991 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:28,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash -99845347, now seen corresponding path program 46 times [2018-10-01 00:42:28,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:28,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:28,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:28,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:28,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:29,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:29,395 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 00:42:29,402 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:29,465 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:29,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:29,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:29,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:29,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29 [2018-10-01 00:42:29,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:42:29,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:42:29,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:29,668 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 30 states. [2018-10-01 00:42:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:31,492 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-10-01 00:42:31,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:42:31,492 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100 [2018-10-01 00:42:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:31,494 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:42:31,494 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:42:31,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:31,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:42:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-10-01 00:42:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:42:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-10-01 00:42:31,512 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100 [2018-10-01 00:42:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:31,513 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-10-01 00:42:31,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:42:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-10-01 00:42:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:42:31,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:31,514 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-10-01 00:42:31,514 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:31,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1462164711, now seen corresponding path program 47 times [2018-10-01 00:42:31,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:31,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:31,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:31,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:31,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:32,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:32,073 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 00:42:32,080 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:32,158 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:42:32,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:32,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:32,455 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:32,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:42:32,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:42:32,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:42:32,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:32,456 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 52 states. [2018-10-01 00:42:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:37,198 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2018-10-01 00:42:37,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:42:37,198 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-01 00:42:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:37,198 INFO L225 Difference]: With dead ends: 158 [2018-10-01 00:42:37,198 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:42:37,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:42:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:42:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:42:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-10-01 00:42:37,224 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102 [2018-10-01 00:42:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:37,224 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-10-01 00:42:37,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:42:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-10-01 00:42:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:42:37,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:37,225 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1] [2018-10-01 00:42:37,226 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:37,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:37,226 INFO L82 PathProgramCache]: Analyzing trace with hash 850942547, now seen corresponding path program 48 times [2018-10-01 00:42:37,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:37,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:37,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:37,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:37,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:38,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:38,661 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 00:42:38,670 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:38,749 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-01 00:42:38,749 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:38,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:39,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:39,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2018-10-01 00:42:39,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:42:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:42:39,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:39,300 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 31 states. [2018-10-01 00:42:40,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:40,439 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2018-10-01 00:42:40,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:42:40,439 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 104 [2018-10-01 00:42:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:40,440 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:42:40,440 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:42:40,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:42:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:42:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2018-10-01 00:42:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:42:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-10-01 00:42:40,464 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2018-10-01 00:42:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:40,465 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-10-01 00:42:40,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:42:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-10-01 00:42:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:42:40,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:40,465 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-10-01 00:42:40,466 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:40,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1711934671, now seen corresponding path program 49 times [2018-10-01 00:42:40,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:40,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:40,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:40,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,502 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:41,502 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 00:42:41,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:41,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:41,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:42:41,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:42:41,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:42:41,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:41,769 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 54 states. [2018-10-01 00:42:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:46,862 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-10-01 00:42:46,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:42:46,862 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-01 00:42:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:46,863 INFO L225 Difference]: With dead ends: 164 [2018-10-01 00:42:46,863 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:42:46,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:42:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:42:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:42:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:42:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2018-10-01 00:42:46,880 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106 [2018-10-01 00:42:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:46,880 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2018-10-01 00:42:46,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:42:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2018-10-01 00:42:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:42:46,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:46,881 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1] [2018-10-01 00:42:46,881 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:46,881 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash -223930615, now seen corresponding path program 50 times [2018-10-01 00:42:46,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:46,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:46,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:47,233 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:47,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:42:47,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:47,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:47,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:47,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:47,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:47,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2018-10-01 00:42:47,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:42:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:42:47,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:47,590 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 32 states. [2018-10-01 00:42:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:48,928 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-10-01 00:42:48,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:42:48,929 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 108 [2018-10-01 00:42:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:48,930 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:42:48,930 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:42:48,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:42:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:42:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-10-01 00:42:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:42:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-10-01 00:42:48,953 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108 [2018-10-01 00:42:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:48,954 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-10-01 00:42:48,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:42:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-10-01 00:42:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:42:48,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:48,955 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-10-01 00:42:48,955 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:48,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:48,955 INFO L82 PathProgramCache]: Analyzing trace with hash -449022971, now seen corresponding path program 51 times [2018-10-01 00:42:48,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:48,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:48,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:48,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:48,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:49,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:49,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:49,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:49,701 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:42:49,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:49,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:49,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:49,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:42:49,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:42:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:42:49,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:49,993 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 56 states. [2018-10-01 00:42:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:52,751 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2018-10-01 00:42:52,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:42:52,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-01 00:42:52,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:52,751 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:42:52,751 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:42:52,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:42:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:42:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:42:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-10-01 00:42:52,769 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2018-10-01 00:42:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:52,769 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-10-01 00:42:52,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:42:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-10-01 00:42:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:42:52,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:52,770 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1] [2018-10-01 00:42:52,770 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:52,770 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:52,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1802883391, now seen corresponding path program 52 times [2018-10-01 00:42:52,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:52,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:52,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:52,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:52,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:53,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:53,092 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 00:42:53,100 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:53,161 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:53,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:53,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:53,689 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:53,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2018-10-01 00:42:53,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:42:53,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:42:53,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:53,690 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 33 states. [2018-10-01 00:42:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:54,976 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-10-01 00:42:54,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:42:54,976 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 112 [2018-10-01 00:42:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:54,978 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:42:54,978 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:42:54,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:42:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-10-01 00:42:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:42:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-10-01 00:42:54,998 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112 [2018-10-01 00:42:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:54,998 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-10-01 00:42:54,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:42:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-10-01 00:42:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:42:54,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:54,999 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-10-01 00:42:54,999 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:54,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:55,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1699051707, now seen corresponding path program 53 times [2018-10-01 00:42:55,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:55,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:55,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:55,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:55,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:55,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:55,500 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 00:42:55,508 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:55,596 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:42:55,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:55,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:55,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:55,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:42:55,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:42:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:42:55,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:55,832 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 58 states. [2018-10-01 00:43:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:00,806 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2018-10-01 00:43:00,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:43:00,806 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-01 00:43:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:00,807 INFO L225 Difference]: With dead ends: 176 [2018-10-01 00:43:00,807 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:43:00,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:43:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:43:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:43:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:43:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2018-10-01 00:43:00,827 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114 [2018-10-01 00:43:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:00,827 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2018-10-01 00:43:00,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:43:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2018-10-01 00:43:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:43:00,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:00,828 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1] [2018-10-01 00:43:00,828 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:00,828 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1220126965, now seen corresponding path program 54 times [2018-10-01 00:43:00,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:00,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:01,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:01,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:01,375 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:01,465 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2018-10-01 00:43:01,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:01,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:02,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:02,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2018-10-01 00:43:02,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:43:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:43:02,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:02,670 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 34 states. [2018-10-01 00:43:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:04,443 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-10-01 00:43:04,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:43:04,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 116 [2018-10-01 00:43:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:04,444 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:43:04,444 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:43:04,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:43:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:43:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-01 00:43:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:43:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-10-01 00:43:04,467 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2018-10-01 00:43:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:04,467 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-10-01 00:43:04,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:43:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-10-01 00:43:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:43:04,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:04,468 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-10-01 00:43:04,468 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:04,468 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash 15874801, now seen corresponding path program 55 times [2018-10-01 00:43:04,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:04,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:04,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:04,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:04,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:04,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:04,949 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:04,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:05,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:05,248 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:05,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:43:05,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:43:05,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:43:05,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:05,249 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 60 states. [2018-10-01 00:43:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:11,602 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-10-01 00:43:11,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:43:11,603 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-01 00:43:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:11,603 INFO L225 Difference]: With dead ends: 182 [2018-10-01 00:43:11,603 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:43:11,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:43:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:43:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:43:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:43:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-10-01 00:43:11,631 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118 [2018-10-01 00:43:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:11,631 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-10-01 00:43:11,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:43:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-10-01 00:43:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:43:11,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:11,632 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1] [2018-10-01 00:43:11,632 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:11,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:11,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1308639701, now seen corresponding path program 56 times [2018-10-01 00:43:11,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:11,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:11,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:11,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:12,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:12,272 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:12,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:12,352 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:12,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:12,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:12,829 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:12,829 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2018-10-01 00:43:12,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:43:12,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:43:12,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:12,830 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 35 states. [2018-10-01 00:43:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:14,276 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2018-10-01 00:43:14,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:43:14,277 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 120 [2018-10-01 00:43:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:14,278 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:43:14,278 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:43:14,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:43:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2018-10-01 00:43:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:43:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-10-01 00:43:14,307 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120 [2018-10-01 00:43:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:14,308 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-10-01 00:43:14,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:43:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-10-01 00:43:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:43:14,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:14,309 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-10-01 00:43:14,309 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:14,309 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash 822598311, now seen corresponding path program 57 times [2018-10-01 00:43:14,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:14,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:14,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:14,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:15,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:15,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:15,952 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:16,079 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:43:16,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:16,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:16,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:16,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:43:16,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:43:16,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:43:16,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:16,364 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 62 states. [2018-10-01 00:43:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:21,718 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2018-10-01 00:43:21,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:43:21,718 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-01 00:43:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:21,718 INFO L225 Difference]: With dead ends: 188 [2018-10-01 00:43:21,718 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:43:21,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:43:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:43:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:43:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:43:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2018-10-01 00:43:21,740 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2018-10-01 00:43:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:21,740 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2018-10-01 00:43:21,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:43:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2018-10-01 00:43:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:43:21,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:21,741 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1] [2018-10-01 00:43:21,741 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:21,741 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:21,741 INFO L82 PathProgramCache]: Analyzing trace with hash -858967839, now seen corresponding path program 58 times [2018-10-01 00:43:21,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:21,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:21,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:21,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:21,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:22,057 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:22,057 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:22,067 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:22,144 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:22,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:22,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:22,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:22,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35 [2018-10-01 00:43:22,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:43:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:43:22,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:22,384 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 36 states. [2018-10-01 00:43:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:23,844 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-10-01 00:43:23,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:43:23,844 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 124 [2018-10-01 00:43:23,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:23,845 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:43:23,845 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:43:23,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:43:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:43:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2018-10-01 00:43:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:43:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-10-01 00:43:23,867 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124 [2018-10-01 00:43:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:23,868 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-10-01 00:43:23,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:43:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-10-01 00:43:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:43:23,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:23,868 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-10-01 00:43:23,869 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:23,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:23,869 INFO L82 PathProgramCache]: Analyzing trace with hash -834439203, now seen corresponding path program 59 times [2018-10-01 00:43:23,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:23,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:23,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:23,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:24,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:24,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:24,814 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:24,914 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:43:24,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:24,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:25,144 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:25,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:43:25,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:43:25,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:43:25,145 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:25,145 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 64 states. [2018-10-01 00:43:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:28,412 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2018-10-01 00:43:28,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:43:28,412 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-01 00:43:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:28,413 INFO L225 Difference]: With dead ends: 194 [2018-10-01 00:43:28,413 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:43:28,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:43:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:43:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:43:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-10-01 00:43:28,436 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126 [2018-10-01 00:43:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:28,436 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-10-01 00:43:28,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:43:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-10-01 00:43:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:43:28,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:28,437 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1] [2018-10-01 00:43:28,437 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:28,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1096867561, now seen corresponding path program 60 times [2018-10-01 00:43:28,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:28,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:28,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:28,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:28,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:28,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:28,773 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 00:43:28,784 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:28,885 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-01 00:43:28,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:28,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:29,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:29,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2018-10-01 00:43:29,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:43:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:43:29,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:29,317 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 37 states. [2018-10-01 00:43:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:30,614 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2018-10-01 00:43:30,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:43:30,615 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128 [2018-10-01 00:43:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:30,616 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:43:30,616 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:43:30,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:43:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:43:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2018-10-01 00:43:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:43:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-10-01 00:43:30,644 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2018-10-01 00:43:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:30,644 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-10-01 00:43:30,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:43:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-10-01 00:43:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:43:30,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:30,645 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-10-01 00:43:30,645 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:30,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1822805357, now seen corresponding path program 61 times [2018-10-01 00:43:30,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:30,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:30,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:31,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:31,313 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 00:43:31,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:31,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:31,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:31,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:43:31,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:43:31,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:43:31,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:31,678 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 66 states. [2018-10-01 00:43:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:39,098 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2018-10-01 00:43:39,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:43:39,098 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-01 00:43:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:39,099 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:43:39,099 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:43:39,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:39,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:43:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:43:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:43:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2018-10-01 00:43:39,121 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 130 [2018-10-01 00:43:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:39,121 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2018-10-01 00:43:39,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:43:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2018-10-01 00:43:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:43:39,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:39,122 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 1, 1, 1, 1] [2018-10-01 00:43:39,122 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:39,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 787132109, now seen corresponding path program 62 times [2018-10-01 00:43:39,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:39,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:39,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:39,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:39,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:39,577 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:39,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:39,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:39,666 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:39,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:39,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 1056 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:40,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:40,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2018-10-01 00:43:40,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:43:40,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:43:40,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:40,160 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand 38 states. [2018-10-01 00:43:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:41,685 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-10-01 00:43:41,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:43:41,685 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 132 [2018-10-01 00:43:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:41,686 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:43:41,686 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:43:41,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:43:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:43:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-10-01 00:43:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:43:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-10-01 00:43:41,713 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 132 [2018-10-01 00:43:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:41,713 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-10-01 00:43:41,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:43:41,713 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-10-01 00:43:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:43:41,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:41,714 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-10-01 00:43:41,714 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:41,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash 519645897, now seen corresponding path program 63 times [2018-10-01 00:43:41,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:41,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:41,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:41,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:41,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:42,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:42,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:43:42,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:42,618 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:43:42,619 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:42,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1056 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:42,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:42,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:43:42,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:43:42,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:43:42,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:42,873 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 68 states. [2018-10-01 00:43:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:51,239 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2018-10-01 00:43:51,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:43:51,239 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-01 00:43:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:51,240 INFO L225 Difference]: With dead ends: 206 [2018-10-01 00:43:51,240 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:43:51,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:43:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:43:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:43:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-10-01 00:43:51,266 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2018-10-01 00:43:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:51,266 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-10-01 00:43:51,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:43:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-10-01 00:43:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:43:51,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:51,267 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 1, 1, 1, 1] [2018-10-01 00:43:51,267 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:51,267 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:51,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1226635779, now seen corresponding path program 64 times [2018-10-01 00:43:51,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:51,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:51,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:51,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:51,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:51,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:51,585 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 00:43:51,593 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:51,679 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:51,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:51,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 1122 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:52,240 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:52,240 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 38 [2018-10-01 00:43:52,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:43:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:43:52,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:52,241 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 39 states. [2018-10-01 00:43:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:53,796 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2018-10-01 00:43:53,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:43:53,796 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 136 [2018-10-01 00:43:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:53,797 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:43:53,797 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:43:53,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:43:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:43:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-01 00:43:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:43:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-10-01 00:43:53,825 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 136 [2018-10-01 00:43:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:53,825 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-10-01 00:43:53,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:43:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-10-01 00:43:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:43:53,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:53,827 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-10-01 00:43:53,827 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:53,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1975877759, now seen corresponding path program 65 times [2018-10-01 00:43:53,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:53,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:53,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:53,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:53,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:54,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:54,565 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 00:43:54,572 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:54,693 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:43:54,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:54,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1122 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:55,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:55,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:43:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:43:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:43:55,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:55,060 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 70 states. [2018-10-01 00:44:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:03,456 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2018-10-01 00:44:03,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:44:03,456 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-01 00:44:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:03,457 INFO L225 Difference]: With dead ends: 212 [2018-10-01 00:44:03,457 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:44:03,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:44:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:44:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:44:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2018-10-01 00:44:03,484 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 138 [2018-10-01 00:44:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:03,484 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2018-10-01 00:44:03,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:44:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2018-10-01 00:44:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:44:03,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:03,485 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 1, 1, 1, 1] [2018-10-01 00:44:03,485 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:03,485 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1050354361, now seen corresponding path program 66 times [2018-10-01 00:44:03,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:03,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:03,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:03,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:03,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:03,824 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:03,824 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 00:44:03,832 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:03,949 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-10-01 00:44:03,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:03,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 1190 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:04,210 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:04,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2018-10-01 00:44:04,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:44:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:44:04,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:04,211 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 40 states. [2018-10-01 00:44:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:05,988 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-10-01 00:44:05,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:44:05,989 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 140 [2018-10-01 00:44:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:05,990 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:44:05,990 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:44:05,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:44:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:44:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2018-10-01 00:44:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:44:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-10-01 00:44:06,019 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2018-10-01 00:44:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:06,020 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-10-01 00:44:06,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:44:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-10-01 00:44:06,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:44:06,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:06,020 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-10-01 00:44:06,021 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:06,021 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash 73159605, now seen corresponding path program 67 times [2018-10-01 00:44:06,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:06,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:06,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:06,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:06,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:06,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:06,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:44:06,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:06,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1190 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:06,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:06,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:44:06,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:44:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:44:06,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:06,979 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 72 states. [2018-10-01 00:44:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:16,161 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2018-10-01 00:44:16,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:44:16,162 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-01 00:44:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:16,162 INFO L225 Difference]: With dead ends: 218 [2018-10-01 00:44:16,162 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:44:16,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:44:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:44:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:44:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-10-01 00:44:16,201 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 142 [2018-10-01 00:44:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:16,201 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-10-01 00:44:16,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:44:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-10-01 00:44:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:44:16,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:16,202 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 1, 1, 1, 1] [2018-10-01 00:44:16,203 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:16,203 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1220692207, now seen corresponding path program 68 times [2018-10-01 00:44:16,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:16,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:16,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:16,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:16,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:16,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:16,666 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:44:16,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:16,762 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:16,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:16,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 1260 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:17,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:17,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2018-10-01 00:44:17,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:44:17,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:44:17,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:17,033 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 41 states. [2018-10-01 00:44:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:18,482 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2018-10-01 00:44:18,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:44:18,483 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 144 [2018-10-01 00:44:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:18,484 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:44:18,484 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:44:18,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:44:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:44:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2018-10-01 00:44:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:44:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-10-01 00:44:18,520 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 144 [2018-10-01 00:44:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:18,520 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-10-01 00:44:18,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:44:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-10-01 00:44:18,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:44:18,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:18,521 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-10-01 00:44:18,521 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:18,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash 559072363, now seen corresponding path program 69 times [2018-10-01 00:44:18,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:18,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:18,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:19,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:19,143 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 00:44:19,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:19,281 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:44:19,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:19,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1260 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:19,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:19,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:44:19,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:44:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:44:19,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:19,544 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 74 states. [2018-10-01 00:44:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:28,790 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2018-10-01 00:44:28,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:44:28,790 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-01 00:44:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:28,791 INFO L225 Difference]: With dead ends: 224 [2018-10-01 00:44:28,791 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:44:28,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:44:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:44:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:44:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2018-10-01 00:44:28,828 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2018-10-01 00:44:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:28,828 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2018-10-01 00:44:28,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:44:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2018-10-01 00:44:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:44:28,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:28,829 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 36, 35, 1, 1, 1, 1] [2018-10-01 00:44:28,829 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:28,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:28,830 INFO L82 PathProgramCache]: Analyzing trace with hash 719817893, now seen corresponding path program 70 times [2018-10-01 00:44:28,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:28,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:28,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:28,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:28,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:29,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:29,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:44:29,204 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:29,295 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:29,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:29,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1332 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:29,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:29,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 41 [2018-10-01 00:44:29,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:44:29,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:44:29,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:29,595 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand 42 states. [2018-10-01 00:44:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:31,418 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-10-01 00:44:31,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:44:31,418 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 148 [2018-10-01 00:44:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:31,419 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:44:31,420 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:44:31,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:44:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:44:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-10-01 00:44:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:44:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-10-01 00:44:31,451 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 148 [2018-10-01 00:44:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:31,451 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-10-01 00:44:31,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:44:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-10-01 00:44:31,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:44:31,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:31,452 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-10-01 00:44:31,453 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:31,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 255193761, now seen corresponding path program 71 times [2018-10-01 00:44:31,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:31,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:31,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:31,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:31,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:32,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:32,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:44:32,125 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:32,252 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:44:32,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:32,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1332 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:32,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:32,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:44:32,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:44:32,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:44:32,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:32,588 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 76 states. [2018-10-01 00:44:42,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:42,696 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2018-10-01 00:44:42,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:44:42,696 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-01 00:44:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:42,697 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:44:42,697 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:44:42,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:44:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:44:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:44:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-10-01 00:44:42,743 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 150 [2018-10-01 00:44:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:42,743 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-10-01 00:44:42,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:44:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-10-01 00:44:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:44:42,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:42,744 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 37, 36, 1, 1, 1, 1] [2018-10-01 00:44:42,744 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:42,744 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:42,744 INFO L82 PathProgramCache]: Analyzing trace with hash 878185947, now seen corresponding path program 72 times [2018-10-01 00:44:42,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:42,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:42,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:42,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:42,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:43,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:43,329 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 00:44:43,337 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:43,467 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-01 00:44:43,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:43,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2738 backedges. 1406 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:43,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:43,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2018-10-01 00:44:43,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:44:43,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:44:43,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:43,764 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 43 states. [2018-10-01 00:44:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:45,420 INFO L93 Difference]: Finished difference Result 161 states and 162 transitions. [2018-10-01 00:44:45,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:44:45,421 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 152 [2018-10-01 00:44:45,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:45,422 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:44:45,422 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:44:45,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:44:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:44:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-10-01 00:44:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:44:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-10-01 00:44:45,456 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2018-10-01 00:44:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:45,456 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-10-01 00:44:45,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:44:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-10-01 00:44:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:44:45,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:45,457 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-10-01 00:44:45,457 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:45,457 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2123038295, now seen corresponding path program 73 times [2018-10-01 00:44:45,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:45,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:45,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:45,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:45,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:46,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:46,307 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 00:44:46,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:46,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1406 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:46,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:46,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:44:46,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:44:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:44:46,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:46,677 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 78 states. [2018-10-01 00:44:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:56,776 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2018-10-01 00:44:56,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:44:56,776 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-01 00:44:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:56,777 INFO L225 Difference]: With dead ends: 236 [2018-10-01 00:44:56,777 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:44:56,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:44:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:44:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:44:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2018-10-01 00:44:56,810 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 154 [2018-10-01 00:44:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:56,810 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2018-10-01 00:44:56,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:44:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2018-10-01 00:44:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:44:56,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:56,811 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 38, 37, 1, 1, 1, 1] [2018-10-01 00:44:56,811 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:56,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1034359663, now seen corresponding path program 74 times [2018-10-01 00:44:56,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:56,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:56,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:56,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:56,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:57,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:57,291 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 00:44:57,298 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:57,389 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:57,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:57,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2888 backedges. 1482 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:57,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:57,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2018-10-01 00:44:57,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:44:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:44:57,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:57,677 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand 44 states. [2018-10-01 00:44:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:59,423 INFO L93 Difference]: Finished difference Result 165 states and 166 transitions. [2018-10-01 00:44:59,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:44:59,423 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 156 [2018-10-01 00:44:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:59,424 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:44:59,424 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:44:59,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:44:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:44:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-01 00:44:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:44:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-10-01 00:44:59,465 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 156 [2018-10-01 00:44:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:59,465 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-10-01 00:44:59,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:44:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-10-01 00:44:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:44:59,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:59,466 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-10-01 00:44:59,466 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:59,466 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:59,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1882257523, now seen corresponding path program 75 times [2018-10-01 00:44:59,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:59,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:59,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:59,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:59,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:00,149 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:00,149 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 00:45:00,157 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:00,294 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 00:45:00,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:00,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1482 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:00,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:00,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:45:00,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:45:00,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:45:00,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:00,574 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 80 states. [2018-10-01 00:45:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:11,869 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2018-10-01 00:45:11,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:45:11,869 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-01 00:45:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:11,870 INFO L225 Difference]: With dead ends: 242 [2018-10-01 00:45:11,870 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:45:11,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:45:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:45:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:45:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:45:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2018-10-01 00:45:11,908 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2018-10-01 00:45:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:11,908 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2018-10-01 00:45:11,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:45:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2018-10-01 00:45:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:45:11,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:11,909 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 1, 1, 1, 1] [2018-10-01 00:45:11,909 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:11,909 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:11,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1109870791, now seen corresponding path program 76 times [2018-10-01 00:45:11,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:11,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:11,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:11,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:11,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:12,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:12,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:45:12,319 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:12,410 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:12,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:12,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1560 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:12,710 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:12,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2018-10-01 00:45:12,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:45:12,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:45:12,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:12,711 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 45 states. [2018-10-01 00:45:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:14,562 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2018-10-01 00:45:14,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:45:14,562 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 160 [2018-10-01 00:45:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:14,563 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:45:14,563 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:45:14,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:45:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:45:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-10-01 00:45:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:45:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-10-01 00:45:14,602 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 160 [2018-10-01 00:45:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:14,602 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-10-01 00:45:14,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:45:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-10-01 00:45:14,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:45:14,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:14,612 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-10-01 00:45:14,612 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:14,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:14,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1433873987, now seen corresponding path program 77 times [2018-10-01 00:45:14,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:14,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:14,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:14,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:14,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:15,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:15,293 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 00:45:15,301 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:15,445 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 00:45:15,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:15,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1560 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:15,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:15,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:45:15,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:45:15,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:45:15,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:15,761 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 82 states. [2018-10-01 00:45:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:27,809 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2018-10-01 00:45:27,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:45:27,809 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-01 00:45:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:27,810 INFO L225 Difference]: With dead ends: 248 [2018-10-01 00:45:27,810 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:45:27,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:45:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:45:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:45:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-10-01 00:45:27,845 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 162 [2018-10-01 00:45:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:27,845 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-10-01 00:45:27,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:45:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-10-01 00:45:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:45:27,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:27,847 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 40, 39, 1, 1, 1, 1] [2018-10-01 00:45:27,847 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:27,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1292352899, now seen corresponding path program 78 times [2018-10-01 00:45:27,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:27,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:27,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:28,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:28,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:45:28,262 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:45:28,404 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2018-10-01 00:45:28,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:28,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3200 backedges. 1640 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:28,781 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:28,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2018-10-01 00:45:28,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:45:28,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:45:28,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:28,782 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 46 states. [2018-10-01 00:45:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:30,603 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2018-10-01 00:45:30,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:45:30,604 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 164 [2018-10-01 00:45:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:30,605 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:45:30,605 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:45:30,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:45:30,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:45:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-10-01 00:45:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:45:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-10-01 00:45:30,643 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2018-10-01 00:45:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:30,643 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-10-01 00:45:30,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:45:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-10-01 00:45:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:45:30,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:30,644 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-10-01 00:45:30,645 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:30,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash -705654151, now seen corresponding path program 79 times [2018-10-01 00:45:30,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:30,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:30,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:31,372 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:31,372 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 00:45:31,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:31,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1640 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:31,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:31,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:45:31,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:45:31,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:45:31,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:31,782 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 84 states. [2018-10-01 00:45:39,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:39,637 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2018-10-01 00:45:39,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:45:39,637 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-01 00:45:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:39,638 INFO L225 Difference]: With dead ends: 254 [2018-10-01 00:45:39,638 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:45:39,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:45:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:45:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:45:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-10-01 00:45:39,678 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 166 [2018-10-01 00:45:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:39,678 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-10-01 00:45:39,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:45:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-10-01 00:45:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:45:39,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:39,679 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 1, 1, 1, 1] [2018-10-01 00:45:39,679 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:39,679 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1476855373, now seen corresponding path program 80 times [2018-10-01 00:45:39,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:39,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:39,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:39,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:39,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:40,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:40,117 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:45:40,124 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:40,222 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:40,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:40,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3362 backedges. 1722 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:40,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:40,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2018-10-01 00:45:40,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:45:40,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:45:40,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:40,536 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 47 states. [2018-10-01 00:45:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:42,827 INFO L93 Difference]: Finished difference Result 177 states and 178 transitions. [2018-10-01 00:45:42,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:45:42,827 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 168 [2018-10-01 00:45:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:42,829 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:45:42,829 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:45:42,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:45:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:45:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2018-10-01 00:45:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:45:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-10-01 00:45:42,869 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 168 [2018-10-01 00:45:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:42,869 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-10-01 00:45:42,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:45:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-10-01 00:45:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:45:42,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:42,870 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-10-01 00:45:42,870 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:42,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1918872529, now seen corresponding path program 81 times [2018-10-01 00:45:42,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:42,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:42,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:42,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:42,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:43,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:43,604 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 00:45:43,612 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:43,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 00:45:43,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:43,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1722 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:44,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:44,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:45:44,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:45:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:45:44,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:44,092 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 86 states. [2018-10-01 00:45:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:51,515 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2018-10-01 00:45:51,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:45:51,516 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-01 00:45:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:51,516 INFO L225 Difference]: With dead ends: 260 [2018-10-01 00:45:51,516 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:45:51,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:45:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:45:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:45:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-10-01 00:45:51,555 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2018-10-01 00:45:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:51,555 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-10-01 00:45:51,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:45:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-10-01 00:45:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:45:51,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:51,556 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 1, 1, 1, 1] [2018-10-01 00:45:51,556 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:51,557 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash -900821399, now seen corresponding path program 82 times [2018-10-01 00:45:51,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:51,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:51,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:51,985 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:51,985 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 00:45:51,994 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:52,104 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:52,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:52,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1806 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:52,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:52,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 47 [2018-10-01 00:45:52,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:45:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:45:52,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:52,566 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 48 states. [2018-10-01 00:45:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:54,681 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-10-01 00:45:54,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:45:54,682 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 172 [2018-10-01 00:45:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:54,683 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:45:54,683 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:45:54,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:45:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:45:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-10-01 00:45:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:45:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-10-01 00:45:54,727 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 172 [2018-10-01 00:45:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:54,727 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-10-01 00:45:54,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:45:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-10-01 00:45:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:45:54,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:54,729 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-10-01 00:45:54,729 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:54,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1893962597, now seen corresponding path program 83 times [2018-10-01 00:45:54,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:54,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:54,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:55,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:55,550 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 00:45:55,558 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:55,719 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 00:45:55,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:55,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1806 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:56,027 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:56,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:45:56,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:45:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:45:56,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:56,028 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 88 states. [2018-10-01 00:46:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:04,097 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2018-10-01 00:46:04,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:46:04,097 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-01 00:46:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:04,098 INFO L225 Difference]: With dead ends: 266 [2018-10-01 00:46:04,098 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:46:04,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:46:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:46:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:46:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-10-01 00:46:04,139 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 174 [2018-10-01 00:46:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:04,140 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-10-01 00:46:04,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:46:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-10-01 00:46:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:46:04,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:04,141 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 43, 42, 1, 1, 1, 1] [2018-10-01 00:46:04,141 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:04,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash -619306849, now seen corresponding path program 84 times [2018-10-01 00:46:04,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:04,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:04,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:04,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:04,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:04,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:04,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:46:04,609 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:04,768 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-01 00:46:04,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:04,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 1892 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:05,094 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:05,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2018-10-01 00:46:05,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:46:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:46:05,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:05,096 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 49 states. [2018-10-01 00:46:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:07,352 INFO L93 Difference]: Finished difference Result 185 states and 186 transitions. [2018-10-01 00:46:07,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:46:07,353 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 176 [2018-10-01 00:46:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:07,354 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:46:07,354 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:46:07,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:46:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:46:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-01 00:46:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:46:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-10-01 00:46:07,397 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2018-10-01 00:46:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:07,397 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-10-01 00:46:07,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:46:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-10-01 00:46:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:46:07,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:07,398 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-10-01 00:46:07,399 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:07,399 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:07,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1846505499, now seen corresponding path program 85 times [2018-10-01 00:46:07,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:07,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:07,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:07,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:08,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:08,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:46:08,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:08,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1892 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:08,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:08,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:46:08,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:46:08,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:46:08,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:08,797 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 90 states. [2018-10-01 00:46:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:16,928 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2018-10-01 00:46:16,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:46:16,929 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-01 00:46:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:16,929 INFO L225 Difference]: With dead ends: 272 [2018-10-01 00:46:16,930 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:46:16,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:46:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:46:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:46:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2018-10-01 00:46:16,972 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 178 [2018-10-01 00:46:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:16,972 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2018-10-01 00:46:16,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:46:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2018-10-01 00:46:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:46:16,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:16,973 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 44, 43, 1, 1, 1, 1] [2018-10-01 00:46:16,973 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:16,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 895799381, now seen corresponding path program 86 times [2018-10-01 00:46:16,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:16,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:16,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:16,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:16,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:17,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:17,424 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 00:46:17,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:17,549 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:17,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:17,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3872 backedges. 1980 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:17,885 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:17,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2018-10-01 00:46:17,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:46:17,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:46:17,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:17,886 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 50 states. [2018-10-01 00:46:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:20,084 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-10-01 00:46:20,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:46:20,084 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 180 [2018-10-01 00:46:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:20,085 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:46:20,085 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:46:20,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:46:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:46:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2018-10-01 00:46:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:46:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-10-01 00:46:20,129 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 180 [2018-10-01 00:46:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:20,129 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-10-01 00:46:20,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:46:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-10-01 00:46:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:46:20,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:20,130 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-10-01 00:46:20,130 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:20,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1869679185, now seen corresponding path program 87 times [2018-10-01 00:46:20,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:20,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:20,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:20,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:20,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:20,975 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:20,975 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 00:46:20,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:21,156 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 00:46:21,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:21,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1980 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:21,478 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:21,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:46:21,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:46:21,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:46:21,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:21,480 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 92 states. [2018-10-01 00:46:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:30,475 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2018-10-01 00:46:30,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:46:30,475 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-01 00:46:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:30,476 INFO L225 Difference]: With dead ends: 278 [2018-10-01 00:46:30,476 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:46:30,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:46:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:46:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:46:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-10-01 00:46:30,529 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2018-10-01 00:46:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:30,529 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-10-01 00:46:30,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:46:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-10-01 00:46:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:46:30,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:30,530 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 45, 44, 1, 1, 1, 1] [2018-10-01 00:46:30,530 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:30,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -800604789, now seen corresponding path program 88 times [2018-10-01 00:46:30,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:30,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:30,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:30,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:30,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:30,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:30,998 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 00:46:31,006 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:31,124 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:31,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:31,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 2070 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:31,468 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:31,468 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 50 [2018-10-01 00:46:31,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:46:31,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:46:31,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:31,469 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 51 states. [2018-10-01 00:46:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:33,804 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2018-10-01 00:46:33,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:46:33,804 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 184 [2018-10-01 00:46:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:33,805 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:46:33,805 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:46:33,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:46:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:46:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2018-10-01 00:46:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:46:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-10-01 00:46:33,857 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 184 [2018-10-01 00:46:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:33,857 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-10-01 00:46:33,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:46:33,857 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-10-01 00:46:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:46:33,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:33,858 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-10-01 00:46:33,858 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:33,858 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:33,858 INFO L82 PathProgramCache]: Analyzing trace with hash -582123001, now seen corresponding path program 89 times [2018-10-01 00:46:33,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:33,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:33,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:33,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:34,764 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:34,764 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 00:46:34,771 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:46:34,954 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 00:46:34,955 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:34,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2070 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:35,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:35,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:46:35,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:46:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:46:35,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:35,285 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 94 states. [2018-10-01 00:46:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:44,431 INFO L93 Difference]: Finished difference Result 284 states and 286 transitions. [2018-10-01 00:46:44,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:46:44,431 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-01 00:46:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:44,432 INFO L225 Difference]: With dead ends: 284 [2018-10-01 00:46:44,432 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:46:44,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:44,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:46:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:46:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:46:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2018-10-01 00:46:44,476 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 186 [2018-10-01 00:46:44,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:44,476 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2018-10-01 00:46:44,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:46:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2018-10-01 00:46:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:46:44,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:44,477 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 46, 45, 1, 1, 1, 1] [2018-10-01 00:46:44,477 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:44,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:44,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1060894655, now seen corresponding path program 90 times [2018-10-01 00:46:44,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:44,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:44,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:44,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:44,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:44,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:44,947 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 00:46:44,955 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:45,142 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2018-10-01 00:46:45,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:45,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 2162 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:45,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:45,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2018-10-01 00:46:45,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:46:45,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:46:45,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:45,534 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand 52 states. [2018-10-01 00:46:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:47,567 INFO L93 Difference]: Finished difference Result 197 states and 198 transitions. [2018-10-01 00:46:47,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:46:47,568 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 188 [2018-10-01 00:46:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:47,569 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:46:47,569 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:46:47,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:46:47,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:46:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2018-10-01 00:46:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:46:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-10-01 00:46:47,619 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2018-10-01 00:46:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:47,619 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-10-01 00:46:47,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:46:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-10-01 00:46:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:46:47,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:47,620 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-10-01 00:46:47,620 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:47,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:47,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1612581059, now seen corresponding path program 91 times [2018-10-01 00:46:47,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:47,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:47,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:47,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:47,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:48,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:48,501 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 00:46:48,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:48,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2162 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:49,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:49,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:46:49,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:46:49,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:46:49,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:49,119 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 96 states. [2018-10-01 00:46:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:58,395 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2018-10-01 00:46:58,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:46:58,396 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-01 00:46:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:58,396 INFO L225 Difference]: With dead ends: 290 [2018-10-01 00:46:58,397 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:46:58,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:46:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:46:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:46:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:46:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2018-10-01 00:46:58,453 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 190 [2018-10-01 00:46:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:58,453 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2018-10-01 00:46:58,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:46:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2018-10-01 00:46:58,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:46:58,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:58,454 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 47, 46, 1, 1, 1, 1] [2018-10-01 00:46:58,454 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:58,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:58,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1003933815, now seen corresponding path program 92 times [2018-10-01 00:46:58,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:58,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:58,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:58,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:58,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:59,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:59,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:46:59,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:59,247 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:59,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:59,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 2256 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:59,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:59,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2018-10-01 00:46:59,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:46:59,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:46:59,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:59,617 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand 53 states. [2018-10-01 00:47:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:01,836 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2018-10-01 00:47:01,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:47:01,836 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 192 [2018-10-01 00:47:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:01,837 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:47:01,838 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:47:01,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:47:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:47:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-10-01 00:47:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:47:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-10-01 00:47:01,888 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 192 [2018-10-01 00:47:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:01,888 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-10-01 00:47:01,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:47:01,888 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-10-01 00:47:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:47:01,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:01,889 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-10-01 00:47:01,889 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:01,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:01,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1587312141, now seen corresponding path program 93 times [2018-10-01 00:47:01,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:01,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:01,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:01,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:01,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:02,877 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:02,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:47:02,885 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:03,075 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 00:47:03,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:03,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2256 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:03,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:03,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:47:03,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:47:03,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:47:03,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:03,420 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 98 states. [2018-10-01 00:47:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:13,358 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2018-10-01 00:47:13,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:47:13,358 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-01 00:47:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:13,359 INFO L225 Difference]: With dead ends: 296 [2018-10-01 00:47:13,359 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:47:13,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:47:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:47:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:47:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-10-01 00:47:13,409 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2018-10-01 00:47:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:13,409 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-10-01 00:47:13,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:47:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-10-01 00:47:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:47:13,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:13,410 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 48, 47, 1, 1, 1, 1] [2018-10-01 00:47:13,410 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:13,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash 410334765, now seen corresponding path program 94 times [2018-10-01 00:47:13,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:13,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:13,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:13,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:13,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:13,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:13,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:47:13,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:47:14,058 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:47:14,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:14,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 2352 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:14,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:14,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 53 [2018-10-01 00:47:14,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:47:14,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:47:14,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:14,561 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 54 states. [2018-10-01 00:47:16,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:16,739 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2018-10-01 00:47:16,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:47:16,739 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 196 [2018-10-01 00:47:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:16,740 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:47:16,740 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:47:16,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:47:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:47:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-01 00:47:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:47:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-10-01 00:47:16,793 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 196 [2018-10-01 00:47:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:16,794 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-10-01 00:47:16,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:47:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-10-01 00:47:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:47:16,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:16,794 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-10-01 00:47:16,795 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:16,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:16,795 INFO L82 PathProgramCache]: Analyzing trace with hash -805348823, now seen corresponding path program 95 times [2018-10-01 00:47:16,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:16,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:16,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:16,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:16,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:17,718 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:17,718 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:47:17,729 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:17,937 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 00:47:17,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:17,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2352 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:18,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:18,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:47:18,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:47:18,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:47:18,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:18,285 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 100 states. [2018-10-01 00:47:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:28,467 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2018-10-01 00:47:28,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:47:28,467 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-01 00:47:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:28,468 INFO L225 Difference]: With dead ends: 302 [2018-10-01 00:47:28,468 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:47:28,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:47:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:47:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:47:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2018-10-01 00:47:28,520 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 198 [2018-10-01 00:47:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:28,520 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2018-10-01 00:47:28,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:47:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2018-10-01 00:47:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:47:28,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:28,521 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 49, 48, 1, 1, 1, 1] [2018-10-01 00:47:28,521 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:28,522 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash -779331229, now seen corresponding path program 96 times [2018-10-01 00:47:28,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:28,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:28,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:28,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:28,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:29,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:29,038 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 00:47:29,046 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:29,260 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-01 00:47:29,260 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:29,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 2450 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:29,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:29,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2018-10-01 00:47:29,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:47:29,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:47:29,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:29,686 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 55 states. [2018-10-01 00:47:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:32,097 INFO L93 Difference]: Finished difference Result 209 states and 210 transitions. [2018-10-01 00:47:32,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:47:32,097 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 200 [2018-10-01 00:47:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:32,099 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:47:32,099 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:47:32,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:47:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:47:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2018-10-01 00:47:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:47:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-10-01 00:47:32,150 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2018-10-01 00:47:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:32,150 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-10-01 00:47:32,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:47:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-10-01 00:47:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:47:32,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:32,151 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-10-01 00:47:32,151 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:32,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:32,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1613068321, now seen corresponding path program 97 times [2018-10-01 00:47:32,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:32,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:32,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:32,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:32,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:33,070 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:33,070 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 00:47:33,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:33,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2450 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:33,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:33,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:47:33,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:47:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:47:33,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:33,570 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 102 states. [2018-10-01 00:47:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:43,793 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2018-10-01 00:47:43,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:47:43,793 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-01 00:47:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:43,794 INFO L225 Difference]: With dead ends: 308 [2018-10-01 00:47:43,794 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:47:43,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:47:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:47:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:47:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2018-10-01 00:47:43,843 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 202 [2018-10-01 00:47:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:43,843 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2018-10-01 00:47:43,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:47:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2018-10-01 00:47:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:47:43,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:43,844 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 50, 49, 1, 1, 1, 1] [2018-10-01 00:47:43,844 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:43,844 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash 134306329, now seen corresponding path program 98 times [2018-10-01 00:47:43,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:43,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:43,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:43,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:43,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:44,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:44,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:47:44,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:47:44,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:47:44,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:44,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 2550 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:44,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:44,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2018-10-01 00:47:44,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:47:44,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:47:44,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:44,897 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand 56 states. [2018-10-01 00:47:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:47,291 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-10-01 00:47:47,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:47:47,291 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 204 [2018-10-01 00:47:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:47,293 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:47:47,293 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:47:47,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:47:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:47:47,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2018-10-01 00:47:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:47:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-10-01 00:47:47,345 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 204 [2018-10-01 00:47:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:47,345 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-10-01 00:47:47,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:47:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-10-01 00:47:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:47:47,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:47,346 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-10-01 00:47:47,346 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:47,346 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash 219296533, now seen corresponding path program 99 times [2018-10-01 00:47:47,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:47,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:47,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:47,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:47,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:48,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:48,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:47:48,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:48,561 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 00:47:48,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:48,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2550 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:48,926 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:48,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:47:48,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:47:48,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:47:48,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:48,927 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 104 states. [2018-10-01 00:47:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:58,525 INFO L93 Difference]: Finished difference Result 314 states and 316 transitions. [2018-10-01 00:47:58,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:47:58,526 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-01 00:47:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:58,527 INFO L225 Difference]: With dead ends: 314 [2018-10-01 00:47:58,527 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:47:58,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:47:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:47:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:47:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-10-01 00:47:58,586 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2018-10-01 00:47:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:58,587 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-10-01 00:47:58,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:47:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-10-01 00:47:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:47:58,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:58,587 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 51, 50, 1, 1, 1, 1] [2018-10-01 00:47:58,588 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:58,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2068752305, now seen corresponding path program 100 times [2018-10-01 00:47:58,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:58,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:58,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:58,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:59,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:59,142 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 00:47:59,159 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:47:59,296 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:47:59,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:59,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5202 backedges. 2652 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:59,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:59,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2018-10-01 00:47:59,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:47:59,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:47:59,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:59,962 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 57 states. [2018-10-01 00:48:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:02,585 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2018-10-01 00:48:02,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:48:02,585 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 208 [2018-10-01 00:48:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:02,586 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:48:02,586 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:48:02,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:48:02,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:48:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2018-10-01 00:48:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:48:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-10-01 00:48:02,657 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 208 [2018-10-01 00:48:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:02,657 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-10-01 00:48:02,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:48:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-10-01 00:48:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:48:02,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:02,658 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-10-01 00:48:02,658 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:02,659 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash 498826187, now seen corresponding path program 101 times [2018-10-01 00:48:02,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:02,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:02,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:02,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:02,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:03,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:03,668 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:48:03,675 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:03,899 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 00:48:03,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:03,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2652 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:04,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:04,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:48:04,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:48:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:48:04,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:04,276 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 106 states. [2018-10-01 00:48:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:07,695 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2018-10-01 00:48:07,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:48:07,695 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-01 00:48:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:07,695 INFO L225 Difference]: With dead ends: 320 [2018-10-01 00:48:07,695 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:48:07,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:48:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:48:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:48:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:48:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2018-10-01 00:48:07,763 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 210 [2018-10-01 00:48:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:07,763 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2018-10-01 00:48:07,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:48:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2018-10-01 00:48:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:48:07,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:07,764 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 52, 51, 1, 1, 1, 1] [2018-10-01 00:48:07,764 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:07,764 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1166969851, now seen corresponding path program 102 times [2018-10-01 00:48:07,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:07,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:07,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:07,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:08,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:08,357 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 00:48:08,365 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:08,573 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2018-10-01 00:48:08,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:08,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5408 backedges. 2756 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:08,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:08,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2018-10-01 00:48:08,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:48:08,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:48:08,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:08,972 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand 58 states. [2018-10-01 00:48:11,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:11,467 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-10-01 00:48:11,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:48:11,467 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 212 [2018-10-01 00:48:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:11,468 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:48:11,468 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:48:11,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:48:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:48:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-10-01 00:48:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:48:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-10-01 00:48:11,529 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2018-10-01 00:48:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:11,529 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-10-01 00:48:11,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:48:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-10-01 00:48:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:48:11,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:11,530 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-10-01 00:48:11,530 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:11,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -471629311, now seen corresponding path program 103 times [2018-10-01 00:48:11,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:11,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:11,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:11,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:11,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:12,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:12,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:48:12,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:12,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 2756 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:13,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:13,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:48:13,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:48:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:48:13,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:13,116 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 108 states. [2018-10-01 00:48:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:23,863 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2018-10-01 00:48:23,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:48:23,863 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-01 00:48:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:23,864 INFO L225 Difference]: With dead ends: 326 [2018-10-01 00:48:23,864 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:48:23,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:48:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:48:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:48:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:48:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-10-01 00:48:23,940 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 214 [2018-10-01 00:48:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:23,940 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-10-01 00:48:23,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:48:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-10-01 00:48:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:48:23,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:23,941 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 53, 52, 1, 1, 1, 1] [2018-10-01 00:48:23,941 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:23,941 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash -938554053, now seen corresponding path program 104 times [2018-10-01 00:48:23,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:23,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:23,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:23,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:23,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:24,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:24,507 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 00:48:24,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:48:24,645 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:48:24,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:24,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5618 backedges. 2862 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:25,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:25,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2018-10-01 00:48:25,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:48:25,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:48:25,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:25,064 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 59 states. [2018-10-01 00:48:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:27,723 INFO L93 Difference]: Finished difference Result 225 states and 226 transitions. [2018-10-01 00:48:27,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:48:27,723 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 216 [2018-10-01 00:48:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:27,723 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:48:27,724 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:48:27,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:48:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:48:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-01 00:48:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:48:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-10-01 00:48:27,789 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 216 [2018-10-01 00:48:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:27,790 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-10-01 00:48:27,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:48:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-10-01 00:48:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:48:27,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:27,790 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-10-01 00:48:27,791 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:27,791 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash -7379529, now seen corresponding path program 105 times [2018-10-01 00:48:27,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:27,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:27,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:27,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:28,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:28,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:48:28,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:48:29,084 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 00:48:29,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:29,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 2862 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:29,484 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:29,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:48:29,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:48:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:48:29,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:29,485 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 110 states. [2018-10-01 00:48:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:41,448 INFO L93 Difference]: Finished difference Result 332 states and 334 transitions. [2018-10-01 00:48:41,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:48:41,448 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-01 00:48:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:41,449 INFO L225 Difference]: With dead ends: 332 [2018-10-01 00:48:41,449 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:48:41,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:48:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:48:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:48:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:48:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2018-10-01 00:48:41,515 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2018-10-01 00:48:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:41,516 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2018-10-01 00:48:41,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:48:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2018-10-01 00:48:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:48:41,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:41,518 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 54, 53, 1, 1, 1, 1] [2018-10-01 00:48:41,519 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:41,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash -95517711, now seen corresponding path program 106 times [2018-10-01 00:48:41,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:41,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:41,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:41,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:41,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:42,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:42,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:42,123 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:42,266 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:42,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:42,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 2970 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:42,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:42,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 59 [2018-10-01 00:48:42,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:48:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:48:42,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:42,683 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 60 states. [2018-10-01 00:48:45,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:45,135 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-10-01 00:48:45,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:48:45,135 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 220 [2018-10-01 00:48:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:45,136 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:48:45,136 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:48:45,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:48:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:48:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2018-10-01 00:48:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:48:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-10-01 00:48:45,201 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 220 [2018-10-01 00:48:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:45,201 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-10-01 00:48:45,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:48:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-10-01 00:48:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:48:45,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:45,202 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-10-01 00:48:45,202 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:45,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1598273811, now seen corresponding path program 107 times [2018-10-01 00:48:45,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:45,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:45,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:45,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:45,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:46,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:46,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:48:46,288 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:46,538 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 00:48:46,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:46,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2970 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:47,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:47,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:48:47,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:48:47,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:48:47,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:47,060 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 112 states. [2018-10-01 00:48:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:59,390 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2018-10-01 00:48:59,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:48:59,390 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-01 00:48:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:59,390 INFO L225 Difference]: With dead ends: 338 [2018-10-01 00:48:59,390 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:48:59,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:48:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:48:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:48:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:48:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-10-01 00:48:59,457 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 222 [2018-10-01 00:48:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:59,457 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-10-01 00:48:59,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:48:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-10-01 00:48:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:48:59,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:59,458 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 55, 54, 1, 1, 1, 1] [2018-10-01 00:48:59,458 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:59,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash -840058841, now seen corresponding path program 108 times [2018-10-01 00:48:59,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:59,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:59,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:59,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:59,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:00,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:00,128 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 00:49:00,135 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:49:00,376 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-01 00:49:00,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:00,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 3080 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:00,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:00,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2018-10-01 00:49:00,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:49:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:49:00,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:00,797 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 61 states. [2018-10-01 00:49:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:03,525 INFO L93 Difference]: Finished difference Result 233 states and 234 transitions. [2018-10-01 00:49:03,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:49:03,525 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 224 [2018-10-01 00:49:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:03,526 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:49:03,526 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:49:03,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:49:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:49:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 227. [2018-10-01 00:49:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:49:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-10-01 00:49:03,603 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2018-10-01 00:49:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:03,604 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-10-01 00:49:03,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:49:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-10-01 00:49:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:49:03,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:03,604 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-10-01 00:49:03,605 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:03,605 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:03,605 INFO L82 PathProgramCache]: Analyzing trace with hash 157238691, now seen corresponding path program 109 times [2018-10-01 00:49:03,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:03,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:03,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:03,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:03,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:04,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:04,654 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 00:49:04,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:04,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3080 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:05,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:05,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:49:05,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:49:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:49:05,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:05,183 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 114 states. [2018-10-01 00:49:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:17,848 INFO L93 Difference]: Finished difference Result 344 states and 346 transitions. [2018-10-01 00:49:17,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:49:17,848 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-01 00:49:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:17,849 INFO L225 Difference]: With dead ends: 344 [2018-10-01 00:49:17,849 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:49:17,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:49:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:49:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:49:17,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2018-10-01 00:49:17,916 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 226 [2018-10-01 00:49:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:17,916 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2018-10-01 00:49:17,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:49:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2018-10-01 00:49:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:49:17,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:17,917 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 56, 55, 1, 1, 1, 1] [2018-10-01 00:49:17,917 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:17,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1906411997, now seen corresponding path program 110 times [2018-10-01 00:49:17,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:17,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:17,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:17,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:17,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:18,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:18,546 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 00:49:18,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:49:18,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:49:18,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:18,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6272 backedges. 3192 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:19,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:19,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2018-10-01 00:49:19,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:49:19,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:49:19,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:19,134 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand 62 states. [2018-10-01 00:49:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:21,927 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-10-01 00:49:21,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:49:21,927 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 228 [2018-10-01 00:49:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:21,928 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:49:21,928 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:49:21,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:49:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:49:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2018-10-01 00:49:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:49:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-10-01 00:49:21,997 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 228 [2018-10-01 00:49:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:21,997 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-10-01 00:49:21,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:49:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-10-01 00:49:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:49:21,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:21,998 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-10-01 00:49:21,998 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:21,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1889173031, now seen corresponding path program 111 times [2018-10-01 00:49:21,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:21,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:21,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:23,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:23,369 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 00:49:23,376 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:49:23,619 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 00:49:23,619 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:23,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3192 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:24,041 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:24,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:49:24,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:49:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:49:24,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:24,043 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 116 states. [2018-10-01 00:49:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:38,064 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2018-10-01 00:49:38,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:49:38,064 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-10-01 00:49:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:38,065 INFO L225 Difference]: With dead ends: 350 [2018-10-01 00:49:38,065 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:49:38,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:49:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:49:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:49:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:49:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-10-01 00:49:38,134 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2018-10-01 00:49:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:38,135 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-10-01 00:49:38,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:49:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-10-01 00:49:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:49:38,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:38,135 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 57, 56, 1, 1, 1, 1] [2018-10-01 00:49:38,136 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:38,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:38,136 INFO L82 PathProgramCache]: Analyzing trace with hash -938010349, now seen corresponding path program 112 times [2018-10-01 00:49:38,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:38,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:38,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:38,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:38,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:38,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:49:38,781 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:49:38,934 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:49:38,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:38,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 3306 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:39,358 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:39,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 62 [2018-10-01 00:49:39,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:49:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:49:39,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:39,360 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 63 states. [2018-10-01 00:49:42,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:42,266 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2018-10-01 00:49:42,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:49:42,267 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 232 [2018-10-01 00:49:42,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:42,267 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:49:42,267 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:49:42,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:49:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:49:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-10-01 00:49:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:49:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-10-01 00:49:42,340 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 232 [2018-10-01 00:49:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:42,341 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-10-01 00:49:42,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:49:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-10-01 00:49:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:49:42,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:42,341 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-10-01 00:49:42,342 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:42,342 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash 515120015, now seen corresponding path program 113 times [2018-10-01 00:49:42,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:42,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:42,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:42,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:42,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:43,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:43,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:49:43,675 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:49:43,931 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 00:49:43,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:43,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3306 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:44,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:44,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:49:44,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:49:44,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:49:44,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:44,374 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 118 states. [2018-10-01 00:49:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:58,462 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2018-10-01 00:49:58,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:49:58,462 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-10-01 00:49:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:58,463 INFO L225 Difference]: With dead ends: 356 [2018-10-01 00:49:58,463 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:49:58,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:49:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:49:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:49:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:49:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-10-01 00:49:58,535 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 234 [2018-10-01 00:49:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:58,535 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-10-01 00:49:58,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:49:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-10-01 00:49:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:49:58,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:58,536 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 58, 57, 1, 1, 1, 1] [2018-10-01 00:49:58,536 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:58,536 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:58,536 INFO L82 PathProgramCache]: Analyzing trace with hash -369916471, now seen corresponding path program 114 times [2018-10-01 00:49:58,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:58,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:58,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:58,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:58,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:59,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:59,177 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 00:49:59,184 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:49:59,440 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2018-10-01 00:49:59,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:59,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6728 backedges. 3422 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:59,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:59,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2018-10-01 00:49:59,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:49:59,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:49:59,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:59,889 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 64 states. [2018-10-01 00:50:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:02,633 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-10-01 00:50:02,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:50:02,634 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 236 [2018-10-01 00:50:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:02,634 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:50:02,634 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:50:02,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:50:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:50:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-01 00:50:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:50:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-10-01 00:50:02,710 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2018-10-01 00:50:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:02,710 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-10-01 00:50:02,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:50:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-10-01 00:50:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:50:02,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:02,711 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-10-01 00:50:02,712 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:02,712 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash 992490181, now seen corresponding path program 115 times [2018-10-01 00:50:02,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:02,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:02,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:02,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:02,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:04,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:04,048 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 00:50:04,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:04,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3422 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:04,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:04,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:50:04,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:50:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:50:04,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:04,628 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 120 states. [2018-10-01 00:50:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:18,503 INFO L93 Difference]: Finished difference Result 362 states and 364 transitions. [2018-10-01 00:50:18,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:50:18,503 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-10-01 00:50:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:18,504 INFO L225 Difference]: With dead ends: 362 [2018-10-01 00:50:18,504 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:50:18,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:50:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:50:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:50:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:50:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-10-01 00:50:18,579 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 238 [2018-10-01 00:50:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:18,579 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-10-01 00:50:18,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:50:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-10-01 00:50:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:50:18,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:18,580 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 59, 58, 1, 1, 1, 1] [2018-10-01 00:50:18,580 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:18,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:18,580 INFO L82 PathProgramCache]: Analyzing trace with hash 668200959, now seen corresponding path program 116 times [2018-10-01 00:50:18,580 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:18,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:18,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:18,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:18,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:19,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:19,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:50:19,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:50:19,508 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:50:19,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:19,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6962 backedges. 3540 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:19,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:19,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2018-10-01 00:50:19,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:50:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:50:19,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:19,948 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 65 states. [2018-10-01 00:50:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:23,025 INFO L93 Difference]: Finished difference Result 249 states and 250 transitions. [2018-10-01 00:50:23,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:50:23,026 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 240 [2018-10-01 00:50:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:23,026 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:50:23,027 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:50:23,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:50:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:50:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2018-10-01 00:50:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:50:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-10-01 00:50:23,104 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 240 [2018-10-01 00:50:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:23,104 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-10-01 00:50:23,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:50:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-10-01 00:50:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:50:23,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:23,105 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-10-01 00:50:23,105 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:23,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2104039557, now seen corresponding path program 117 times [2018-10-01 00:50:23,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:23,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:23,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:23,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:23,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:24,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:24,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:50:24,499 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:24,769 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 00:50:24,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:24,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3540 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:25,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:25,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:50:25,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:50:25,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:50:25,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:25,194 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 122 states. [2018-10-01 00:50:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:40,793 INFO L93 Difference]: Finished difference Result 368 states and 370 transitions. [2018-10-01 00:50:40,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:50:40,793 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-10-01 00:50:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:40,794 INFO L225 Difference]: With dead ends: 368 [2018-10-01 00:50:40,794 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:50:40,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:50:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:50:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:50:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:50:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2018-10-01 00:50:40,867 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2018-10-01 00:50:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:40,867 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2018-10-01 00:50:40,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:50:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2018-10-01 00:50:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:50:40,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:40,868 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 60, 59, 1, 1, 1, 1] [2018-10-01 00:50:40,868 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:40,868 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:40,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1941080139, now seen corresponding path program 118 times [2018-10-01 00:50:40,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:40,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:40,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:40,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:40,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:41,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:41,549 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 00:50:41,556 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:50:41,714 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:50:41,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:41,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 3660 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:42,167 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:42,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 65 [2018-10-01 00:50:42,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:50:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:50:42,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:42,168 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand 66 states. [2018-10-01 00:50:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:45,522 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-10-01 00:50:45,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:50:45,522 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 244 [2018-10-01 00:50:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:45,523 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:50:45,523 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:50:45,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:50:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:50:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2018-10-01 00:50:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:50:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-10-01 00:50:45,596 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 244 [2018-10-01 00:50:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:45,597 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-10-01 00:50:45,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:50:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-10-01 00:50:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:50:45,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:45,597 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-10-01 00:50:45,597 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:45,598 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1362273871, now seen corresponding path program 119 times [2018-10-01 00:50:45,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:45,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:45,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:45,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:45,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:46,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:46,848 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:50:46,856 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:50:47,135 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 00:50:47,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:47,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3660 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:47,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:47,587 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:50:47,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:50:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:50:47,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:47,588 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 124 states. [2018-10-01 00:51:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:02,546 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2018-10-01 00:51:02,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:51:02,547 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-10-01 00:51:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:02,547 INFO L225 Difference]: With dead ends: 374 [2018-10-01 00:51:02,547 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:51:02,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:51:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:51:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:51:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:51:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-10-01 00:51:02,632 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 246 [2018-10-01 00:51:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:02,632 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-10-01 00:51:02,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:51:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-10-01 00:51:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:51:02,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:02,634 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 61, 60, 1, 1, 1, 1] [2018-10-01 00:51:02,634 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:02,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:02,634 INFO L82 PathProgramCache]: Analyzing trace with hash -571654933, now seen corresponding path program 120 times [2018-10-01 00:51:02,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:02,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:02,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:02,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:02,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:03,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:03,335 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:51:03,342 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:51:03,614 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-01 00:51:03,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:03,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7442 backedges. 3782 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:04,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:04,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2018-10-01 00:51:04,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:51:04,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:51:04,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:04,083 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 67 states. [2018-10-01 00:51:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:07,228 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2018-10-01 00:51:07,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:51:07,228 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 248 [2018-10-01 00:51:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:07,229 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:51:07,229 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:51:07,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:51:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:51:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 251. [2018-10-01 00:51:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:51:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-10-01 00:51:07,317 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2018-10-01 00:51:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:07,317 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-10-01 00:51:07,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:51:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-10-01 00:51:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:51:07,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:07,318 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-10-01 00:51:07,318 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:07,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:07,319 INFO L82 PathProgramCache]: Analyzing trace with hash 395356519, now seen corresponding path program 121 times [2018-10-01 00:51:07,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:07,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:07,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:07,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:07,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:08,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:08,614 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 00:51:08,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:08,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 3782 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:09,237 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:09,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:51:09,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:51:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:51:09,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:09,238 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 126 states. [2018-10-01 00:51:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:25,319 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2018-10-01 00:51:25,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:51:25,319 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-10-01 00:51:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:25,319 INFO L225 Difference]: With dead ends: 380 [2018-10-01 00:51:25,319 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:51:25,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:51:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:51:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:51:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:51:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2018-10-01 00:51:25,402 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 250 [2018-10-01 00:51:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:25,402 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2018-10-01 00:51:25,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:51:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2018-10-01 00:51:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:51:25,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:25,411 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 62, 61, 1, 1, 1, 1] [2018-10-01 00:51:25,411 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:25,411 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 557342625, now seen corresponding path program 122 times [2018-10-01 00:51:25,412 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:25,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:25,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:26,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:26,114 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 00:51:26,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:51:26,275 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:51:26,275 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:26,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7688 backedges. 3906 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:26,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:26,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2018-10-01 00:51:26,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:51:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:51:26,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:26,758 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand 68 states. [2018-10-01 00:51:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:29,775 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-10-01 00:51:29,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:51:29,775 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 252 [2018-10-01 00:51:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:29,776 INFO L225 Difference]: With dead ends: 261 [2018-10-01 00:51:29,776 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:51:29,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:51:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:51:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-10-01 00:51:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:51:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-10-01 00:51:29,858 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 252 [2018-10-01 00:51:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:29,858 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-10-01 00:51:29,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:51:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-10-01 00:51:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:51:29,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:29,859 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-10-01 00:51:29,860 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:29,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1264716131, now seen corresponding path program 123 times [2018-10-01 00:51:29,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:29,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:29,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:29,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:29,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:31,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:31,337 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 00:51:31,344 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:51:31,648 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 00:51:31,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:31,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 3906 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:32,113 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:32,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:51:32,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:51:32,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:51:32,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:32,115 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 128 states. [2018-10-01 00:51:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:47,845 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2018-10-01 00:51:47,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:51:47,845 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-10-01 00:51:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:47,846 INFO L225 Difference]: With dead ends: 386 [2018-10-01 00:51:47,846 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 00:51:47,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:51:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 00:51:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 00:51:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 00:51:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-10-01 00:51:47,931 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2018-10-01 00:51:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:47,931 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-10-01 00:51:47,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:51:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-10-01 00:51:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 00:51:47,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:47,932 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 63, 62, 1, 1, 1, 1] [2018-10-01 00:51:47,932 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:47,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:47,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1700003881, now seen corresponding path program 124 times [2018-10-01 00:51:47,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:47,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:47,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:47,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:47,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:48,650 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:48,650 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 00:51:48,658 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:51:48,830 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:51:48,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:48,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7938 backedges. 4032 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:49,324 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:49,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2018-10-01 00:51:49,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:51:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:51:49,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:49,325 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 69 states. [2018-10-01 00:51:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:52,350 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2018-10-01 00:51:52,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:51:52,350 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 256 [2018-10-01 00:51:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:52,351 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:51:52,351 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:51:52,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:51:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:51:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-10-01 00:51:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:51:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-10-01 00:51:52,439 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 256 [2018-10-01 00:51:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:52,440 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-10-01 00:51:52,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:51:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-10-01 00:51:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:51:52,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:52,441 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-10-01 00:51:52,441 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:52,441 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1616223917, now seen corresponding path program 125 times [2018-10-01 00:51:52,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:52,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:52,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:52,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:52,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:53,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:53,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:51:53,823 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:51:54,123 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 00:51:54,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:54,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 4032 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:54,586 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:54,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:51:54,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:51:54,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:51:54,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:54,588 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 130 states. [2018-10-01 00:52:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:01,042 INFO L93 Difference]: Finished difference Result 392 states and 394 transitions. [2018-10-01 00:52:01,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:52:01,042 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-10-01 00:52:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:01,043 INFO L225 Difference]: With dead ends: 392 [2018-10-01 00:52:01,043 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:52:01,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:52:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:52:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:52:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:52:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2018-10-01 00:52:01,126 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 258 [2018-10-01 00:52:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:01,126 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2018-10-01 00:52:01,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:52:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2018-10-01 00:52:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 00:52:01,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:01,128 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 64, 63, 1, 1, 1, 1] [2018-10-01 00:52:01,128 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:01,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1354579341, now seen corresponding path program 126 times [2018-10-01 00:52:01,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:01,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:01,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:01,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:01,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:01,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:01,987 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 00:52:01,997 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:52:02,356 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 65 check-sat command(s) [2018-10-01 00:52:02,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:02,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8192 backedges. 4160 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:03,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:03,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2018-10-01 00:52:03,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:52:03,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:52:03,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:03,068 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 71 states. [2018-10-01 00:52:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:06,537 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-10-01 00:52:06,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:52:06,537 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 260 [2018-10-01 00:52:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:06,539 INFO L225 Difference]: With dead ends: 269 [2018-10-01 00:52:06,539 INFO L226 Difference]: Without dead ends: 267 [2018-10-01 00:52:06,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:52:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-01 00:52:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2018-10-01 00:52:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 00:52:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-10-01 00:52:06,630 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2018-10-01 00:52:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:06,630 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-10-01 00:52:06,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:52:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-10-01 00:52:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:52:06,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:06,631 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-10-01 00:52:06,631 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:06,631 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 375589257, now seen corresponding path program 127 times [2018-10-01 00:52:06,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:06,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:06,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:06,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:06,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:08,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:08,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:52:08,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:52:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:08,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4160 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:08,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:08,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:52:08,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:52:08,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:52:08,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:08,689 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 132 states. [2018-10-01 00:52:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:27,022 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2018-10-01 00:52:27,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:52:27,023 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-10-01 00:52:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:27,023 INFO L225 Difference]: With dead ends: 398 [2018-10-01 00:52:27,023 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 00:52:27,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:52:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 00:52:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 00:52:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:52:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-10-01 00:52:27,121 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 262 [2018-10-01 00:52:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:27,121 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-10-01 00:52:27,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:52:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-10-01 00:52:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-01 00:52:27,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:27,123 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 65, 64, 1, 1, 1, 1] [2018-10-01 00:52:27,123 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:27,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash 232339651, now seen corresponding path program 128 times [2018-10-01 00:52:27,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:27,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:27,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:27,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:52:27,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:27,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:27,896 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 00:52:27,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:52:28,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:52:28,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:28,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8450 backedges. 4290 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:28,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:28,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2018-10-01 00:52:28,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:52:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:52:28,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:28,940 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 72 states. [2018-10-01 00:52:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:32,317 INFO L93 Difference]: Finished difference Result 273 states and 274 transitions. [2018-10-01 00:52:32,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:52:32,318 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 264 [2018-10-01 00:52:32,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:32,318 INFO L225 Difference]: With dead ends: 273 [2018-10-01 00:52:32,318 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 00:52:32,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:52:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 00:52:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2018-10-01 00:52:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-01 00:52:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-10-01 00:52:32,408 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 264 [2018-10-01 00:52:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:32,408 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-10-01 00:52:32,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:52:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-10-01 00:52:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 00:52:32,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:32,410 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-10-01 00:52:32,410 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:32,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash -59961537, now seen corresponding path program 129 times [2018-10-01 00:52:32,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:32,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:32,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:32,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:32,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:33,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:33,860 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 00:52:33,867 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:52:34,188 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 00:52:34,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:34,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4290 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:34,669 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:34,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:52:34,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:52:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:52:34,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:34,670 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 134 states. [2018-10-01 00:52:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:51,707 INFO L93 Difference]: Finished difference Result 404 states and 406 transitions. [2018-10-01 00:52:51,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:52:51,707 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-10-01 00:52:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:51,708 INFO L225 Difference]: With dead ends: 404 [2018-10-01 00:52:51,708 INFO L226 Difference]: Without dead ends: 269 [2018-10-01 00:52:51,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:52:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-01 00:52:51,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-10-01 00:52:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-01 00:52:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2018-10-01 00:52:51,811 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2018-10-01 00:52:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:51,811 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2018-10-01 00:52:51,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:52:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2018-10-01 00:52:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-01 00:52:51,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:51,812 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 66, 65, 1, 1, 1, 1] [2018-10-01 00:52:51,812 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:51,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash -496692871, now seen corresponding path program 130 times [2018-10-01 00:52:51,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:51,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:51,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:51,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:51,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:52,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:52,767 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 00:52:52,774 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:52:52,957 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:52:52,958 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:52,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8712 backedges. 4422 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:53,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:53,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2018-10-01 00:52:53,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:52:53,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:52:53,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:53,502 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand 73 states. [2018-10-01 00:52:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:57,035 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2018-10-01 00:52:57,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:52:57,036 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 268 [2018-10-01 00:52:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:57,037 INFO L225 Difference]: With dead ends: 277 [2018-10-01 00:52:57,037 INFO L226 Difference]: Without dead ends: 275 [2018-10-01 00:52:57,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:52:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-01 00:52:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2018-10-01 00:52:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 00:52:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-10-01 00:52:57,144 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 268 [2018-10-01 00:52:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:57,144 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-10-01 00:52:57,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:52:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-10-01 00:52:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-01 00:52:57,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:57,146 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-10-01 00:52:57,146 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:57,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash -580545931, now seen corresponding path program 131 times [2018-10-01 00:52:57,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:57,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:57,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:57,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:57,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:58,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:58,731 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 00:52:58,738 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:52:59,060 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 00:52:59,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:59,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4422 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:59,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:59,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:52:59,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:52:59,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:52:59,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:59,548 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 136 states. [2018-10-01 00:53:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:53:17,933 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2018-10-01 00:53:17,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:53:17,933 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-10-01 00:53:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:53:17,934 INFO L225 Difference]: With dead ends: 410 [2018-10-01 00:53:17,934 INFO L226 Difference]: Without dead ends: 273 [2018-10-01 00:53:17,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:53:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-01 00:53:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-10-01 00:53:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-01 00:53:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2018-10-01 00:53:18,034 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 270 [2018-10-01 00:53:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:53:18,034 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2018-10-01 00:53:18,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:53:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2018-10-01 00:53:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 00:53:18,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:53:18,035 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 67, 66, 1, 1, 1, 1] [2018-10-01 00:53:18,035 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:53:18,036 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:53:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 649979823, now seen corresponding path program 132 times [2018-10-01 00:53:18,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:53:18,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:53:18,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:18,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:53:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:53:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:18,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:53:18,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:53:18,928 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:53:19,248 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-01 00:53:19,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:53:19,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:53:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8978 backedges. 4556 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:20,152 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:53:20,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2018-10-01 00:53:20,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:53:20,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:53:20,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:53:20,154 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand 74 states. [2018-10-01 00:53:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:53:23,652 INFO L93 Difference]: Finished difference Result 281 states and 282 transitions. [2018-10-01 00:53:23,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:53:23,653 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 272 [2018-10-01 00:53:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:53:23,654 INFO L225 Difference]: With dead ends: 281 [2018-10-01 00:53:23,654 INFO L226 Difference]: Without dead ends: 279 [2018-10-01 00:53:23,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:53:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-01 00:53:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-10-01 00:53:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 00:53:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-10-01 00:53:23,753 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2018-10-01 00:53:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:53:23,753 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-10-01 00:53:23,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:53:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-10-01 00:53:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-01 00:53:23,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:53:23,754 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-10-01 00:53:23,754 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:53:23,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:53:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1860285227, now seen corresponding path program 133 times [2018-10-01 00:53:23,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:53:23,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:53:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:23,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:53:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:53:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:25,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:53:25,162 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 00:53:25,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:53:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:53:25,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:53:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 4556 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:26,002 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:53:26,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:53:26,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:53:26,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:53:26,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:53:26,004 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 138 states. [2018-10-01 00:53:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:53:37,481 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2018-10-01 00:53:37,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:53:37,481 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-10-01 00:53:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:53:37,482 INFO L225 Difference]: With dead ends: 416 [2018-10-01 00:53:37,482 INFO L226 Difference]: Without dead ends: 277 [2018-10-01 00:53:37,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:53:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-10-01 00:53:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-10-01 00:53:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-01 00:53:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-10-01 00:53:37,637 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 274 [2018-10-01 00:53:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:53:37,637 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-10-01 00:53:37,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:53:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-10-01 00:53:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-01 00:53:37,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:53:37,638 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 68, 67, 1, 1, 1, 1] [2018-10-01 00:53:37,639 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:53:37,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:53:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -46605467, now seen corresponding path program 134 times [2018-10-01 00:53:37,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:53:37,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:53:37,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:37,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:53:37,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:53:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:38,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:53:38,685 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 00:53:38,692 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:53:38,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:53:38,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:53:38,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:53:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9248 backedges. 4692 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:39,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:53:39,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 74 [2018-10-01 00:53:39,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:53:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:53:39,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:53:39,414 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 75 states. [2018-10-01 00:53:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:53:43,138 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2018-10-01 00:53:43,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:53:43,138 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 276 [2018-10-01 00:53:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:53:43,139 INFO L225 Difference]: With dead ends: 285 [2018-10-01 00:53:43,139 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 00:53:43,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:53:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 00:53:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-10-01 00:53:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-01 00:53:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-10-01 00:53:43,239 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 276 [2018-10-01 00:53:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:53:43,240 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-10-01 00:53:43,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:53:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-10-01 00:53:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 00:53:43,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:53:43,241 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-10-01 00:53:43,241 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:53:43,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:53:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1838247583, now seen corresponding path program 135 times [2018-10-01 00:53:43,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:53:43,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:53:43,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:43,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:53:43,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:53:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:44,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:53:44,861 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:53:44,869 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:53:45,226 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 00:53:45,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:53:45,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:53:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4692 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:53:45,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:53:45,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:53:45,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:53:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:53:45,800 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:53:45,800 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 140 states. Received shutdown request... [2018-10-01 00:53:53,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:53:53,034 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:53:53,039 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:53:53,039 INFO L202 PluginConnector]: Adding new model down.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:53:53 BoogieIcfgContainer [2018-10-01 00:53:53,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:53:53,040 INFO L168 Benchmark]: Toolchain (without parser) took 768188.06 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -238.0 MB). Free memory was 1.5 GB in the beginning and 861.6 MB in the end (delta: 601.4 MB). Peak memory consumption was 363.4 MB. Max. memory is 7.1 GB. [2018-10-01 00:53:53,042 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 00:53:53,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.28 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 00:53:53,043 INFO L168 Benchmark]: Boogie Preprocessor took 20.67 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 00:53:53,043 INFO L168 Benchmark]: RCFGBuilder took 340.81 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 00:53:53,048 INFO L168 Benchmark]: TraceAbstraction took 767779.29 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -238.0 MB). Free memory was 1.4 GB in the beginning and 861.6 MB in the end (delta: 580.3 MB). Peak memory consumption was 342.3 MB. Max. memory is 7.1 GB. [2018-10-01 00:53:53,050 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.28 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 20.67 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 340.81 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 767779.29 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -238.0 MB). Free memory was 1.4 GB in the beginning and 861.6 MB in the end (delta: 580.3 MB). Peak memory consumption was 342.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (279states) and FLOYD_HOARE automaton (currently 108 states, 140 states before enhancement), while ReachableStatesComputation was computing reachable states (283 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 767.7s OverallTime, 137 OverallIterations, 69 TraceHistogramMax, 612.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2962 SDtfs, 1627 SDslu, 14326 SDs, 0 SdLazy, 147499 SolverSat, 10269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33891 GetRequests, 21643 SyntacticMatches, 5 SemanticMatches, 12243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 188.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=136, 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: 5.2s AutomataMinimizationTime, 136 MinimizatonAttempts, 272 StatesRemovedByMinimization, 68 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.8s SsaConstructionTime, 16.3s SatisfiabilityAnalysisTime, 123.4s InterpolantComputationTime, 38894 NumberOfCodeBlocks, 38894 NumberOfCodeBlocksAsserted, 2662 NumberOfCheckSat, 38622 ConstructedInterpolants, 0 QuantifiedInterpolants, 21475831 SizeOfPredicates, 415 NumberOfNonLiveVariables, 77086 ConjunctsInSsa, 10081 ConjunctsInUnsatCore, 272 InterpolantComputations, 2 PerfectInterpolantSequences, 437918/866454 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/down.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-53-53-066.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-53-53-066.csv Completed graceful shutdown