java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:18:13,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:18:13,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:18:13,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:18:13,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:18:13,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:18:13,741 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:18:13,743 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:18:13,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:18:13,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:18:13,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:18:13,776 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 [2018-10-02 12:18:13,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:18:13,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:18:13,806 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:18:13,806 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:18:13,806 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:18:13,807 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:18:13,808 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:18:13,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:18:13,808 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:18:13,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:18:13,808 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:18:13,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:18:13,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:18:13,809 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:18:13,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:18:13,809 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:18:13,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:18:13,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:18:13,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:18:13,810 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:18:13,811 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:18:13,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:18:13,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:18:13,811 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:18:13,811 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:18:13,812 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:18:13,812 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:18:13,812 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:18:13,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:18:13,812 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:18:13,813 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:18:13,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:18:13,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:18:13,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:18:13,869 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:18:13,870 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:18:13,870 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl [2018-10-02 12:18:13,871 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenEqualityWithBranches.bpl' [2018-10-02 12:18:13,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:18:13,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:18:13,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:13,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:18:13,923 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:18:13,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,962 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:18:13,962 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:18:13,962 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:18:13,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:13,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:18:13,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:18:13,966 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:18:13,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/1) ... [2018-10-02 12:18:13,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:18:13,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:18:13,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:18:13,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:18:13,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (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 [2018-10-02 12:18:14,067 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-02 12:18:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-02 12:18:14,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-02 12:18:14,295 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:18:14,295 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:14 BoogieIcfgContainer [2018-10-02 12:18:14,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:18:14,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:18:14,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:18:14,300 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:18:14,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:13" (1/2) ... [2018-10-02 12:18:14,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2694b593 and model type HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:18:14, skipping insertion in model container [2018-10-02 12:18:14,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:14" (2/2) ... [2018-10-02 12:18:14,303 INFO L112 eAbstractionObserver]: Analyzing ICFG HiddenEqualityWithBranches.bpl [2018-10-02 12:18:14,313 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:18:14,321 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:18:14,368 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:18:14,369 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:18:14,369 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:18:14,369 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:18:14,369 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:18:14,370 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:18:14,370 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:18:14,370 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:18:14,370 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:18:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-02 12:18:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-10-02 12:18:14,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:14,391 INFO L375 BasicCegarLoop]: trace histogram [1, 1] [2018-10-02 12:18:14,392 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:14,398 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash 979, now seen corresponding path program 1 times [2018-10-02 12:18:14,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:14,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:14,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:14,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:14,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:18:14,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-02 12:18:14,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:18:14,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:18:14,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:14,585 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-02 12:18:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:14,811 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-02 12:18:14,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:18:14,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-10-02 12:18:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:14,825 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:18:14,825 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:18:14,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:18:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:18:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:18:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-10-02 12:18:14,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 2 [2018-10-02 12:18:14,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:14,863 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-10-02 12:18:14,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:18:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2018-10-02 12:18:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:18:14,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:14,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-02 12:18:14,864 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:14,865 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:14,865 INFO L82 PathProgramCache]: Analyzing trace with hash 28757385, now seen corresponding path program 1 times [2018-10-02 12:18:14,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:14,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:14,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:14,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:14,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:18:14,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:18:14,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:18:14,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:18:14,908 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:14,908 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 3 states. [2018-10-02 12:18:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:14,973 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2018-10-02 12:18:14,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:18:14,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-10-02 12:18:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:14,974 INFO L225 Difference]: With dead ends: 12 [2018-10-02 12:18:14,974 INFO L226 Difference]: Without dead ends: 8 [2018-10-02 12:18:14,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-02 12:18:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-02 12:18:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:18:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-10-02 12:18:14,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2018-10-02 12:18:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:14,978 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-10-02 12:18:14,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:18:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2018-10-02 12:18:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:18:14,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:14,979 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-02 12:18:14,979 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:14,980 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 28757447, now seen corresponding path program 1 times [2018-10-02 12:18:14,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:14,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:14,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:14,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:15,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:15,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:15,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:15,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2018-10-02 12:18:15,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:18:15,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:18:15,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:15,117 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states. [2018-10-02 12:18:15,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:15,239 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2018-10-02 12:18:15,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:18:15,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-10-02 12:18:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:15,240 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:18:15,240 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:18:15,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:18:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:18:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:18:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-02 12:18:15,245 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2018-10-02 12:18:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:15,245 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-02 12:18:15,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:18:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-02 12:18:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:18:15,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:15,247 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2018-10-02 12:18:15,247 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:15,247 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203669, now seen corresponding path program 1 times [2018-10-02 12:18:15,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:15,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:15,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:15,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:15,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:15,308 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 [2018-10-02 12:18:15,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:15,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:15,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:18:15,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:18:15,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:18:15,581 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:15,582 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-02 12:18:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:15,697 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2018-10-02 12:18:15,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:18:15,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-02 12:18:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:15,699 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:18:15,699 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:18:15,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:18:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:18:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:18:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-10-02 12:18:15,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2018-10-02 12:18:15,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:15,703 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-10-02 12:18:15,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:18:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2018-10-02 12:18:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:18:15,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:15,704 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1] [2018-10-02 12:18:15,705 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:15,705 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2014203731, now seen corresponding path program 2 times [2018-10-02 12:18:15,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:15,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:15,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:15,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:15,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:15,747 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:15,759 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:15,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:15,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:15,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:15,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:15,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:18:15,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:18:15,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:18:15,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:15,830 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 5 states. [2018-10-02 12:18:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:16,013 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-02 12:18:16,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:18:16,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-02 12:18:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:16,014 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:18:16,015 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:18:16,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:18:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:18:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:18:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-02 12:18:16,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-10-02 12:18:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:16,019 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-02 12:18:16,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:18:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-02 12:18:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:18:16,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:16,020 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1] [2018-10-02 12:18:16,020 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:16,020 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:16,021 INFO L82 PathProgramCache]: Analyzing trace with hash 154849801, now seen corresponding path program 2 times [2018-10-02 12:18:16,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:16,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:16,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:16,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:16,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:16,079 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 [2018-10-02 12:18:16,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:16,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:16,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:16,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:16,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:16,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:18:16,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:18:16,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:18:16,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:16,159 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2018-10-02 12:18:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:16,226 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2018-10-02 12:18:16,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:18:16,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-02 12:18:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:16,227 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:18:16,227 INFO L226 Difference]: Without dead ends: 14 [2018-10-02 12:18:16,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-02 12:18:16,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-02 12:18:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:18:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-02 12:18:16,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2018-10-02 12:18:16,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:16,233 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-02 12:18:16,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:18:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-02 12:18:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:18:16,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:16,234 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1] [2018-10-02 12:18:16,234 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:16,234 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:16,234 INFO L82 PathProgramCache]: Analyzing trace with hash 154849863, now seen corresponding path program 3 times [2018-10-02 12:18:16,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:16,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:16,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:16,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:16,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:16,330 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 [2018-10-02 12:18:16,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:16,347 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-02 12:18:16,347 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:16,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:16,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:16,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:18:16,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:18:16,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:18:16,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:16,711 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-10-02 12:18:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:16,930 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-10-02 12:18:16,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:18:16,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-10-02 12:18:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:16,931 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:18:16,931 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:18:16,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:18:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:18:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-02 12:18:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:18:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-02 12:18:16,935 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2018-10-02 12:18:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:16,936 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-02 12:18:16,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:18:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-02 12:18:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:18:16,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:16,937 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1] [2018-10-02 12:18:16,937 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:16,937 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 336984725, now seen corresponding path program 3 times [2018-10-02 12:18:16,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:16,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:16,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:16,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:17,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:17,023 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 [2018-10-02 12:18:17,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:17,044 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-02 12:18:17,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:17,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:17,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:17,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2018-10-02 12:18:17,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:18:17,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:18:17,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:17,158 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 11 states. [2018-10-02 12:18:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:17,550 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-10-02 12:18:17,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:18:17,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-10-02 12:18:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:17,551 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:18:17,551 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:18:17,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:18:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:18:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:18:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-02 12:18:17,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-10-02 12:18:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:17,557 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-02 12:18:17,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:18:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-02 12:18:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:18:17,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:17,558 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2018-10-02 12:18:17,558 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:17,559 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810761, now seen corresponding path program 4 times [2018-10-02 12:18:17,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:17,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:17,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:17,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:17,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:17,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:17,729 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 [2018-10-02 12:18:17,736 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:17,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:17,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:17,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:17,831 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:17,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:18:17,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:18:17,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:18:17,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:17,832 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2018-10-02 12:18:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:18,026 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2018-10-02 12:18:18,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:18:18,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-10-02 12:18:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:18,028 INFO L225 Difference]: With dead ends: 24 [2018-10-02 12:18:18,028 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:18:18,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:18:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:18:18,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-02 12:18:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:18:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-02 12:18:18,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2018-10-02 12:18:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:18,033 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-02 12:18:18,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:18:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-02 12:18:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:18:18,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:18,034 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1] [2018-10-02 12:18:18,034 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:18,034 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1774810823, now seen corresponding path program 4 times [2018-10-02 12:18:18,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:18,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:18,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:18,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:18,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:18,172 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:18,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:18,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:18,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:18:18,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:18:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:18:18,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:18,265 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-10-02 12:18:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:18,356 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2018-10-02 12:18:18,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:18:18,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-02 12:18:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:18,358 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:18:18,358 INFO L226 Difference]: Without dead ends: 22 [2018-10-02 12:18:18,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:18:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-02 12:18:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-02 12:18:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:18:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-10-02 12:18:18,365 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 17 [2018-10-02 12:18:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:18,365 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-10-02 12:18:18,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:18:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-10-02 12:18:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:18:18,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:18,366 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1] [2018-10-02 12:18:18,366 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:18,366 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561067, now seen corresponding path program 5 times [2018-10-02 12:18:18,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:18,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:18,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:18,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:18,443 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 [2018-10-02 12:18:18,450 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:18,465 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:18:18,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:18,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:18,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:18:18,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:18:18,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:18:18,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:18,540 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2018-10-02 12:18:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:18,636 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-10-02 12:18:18,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:18:18,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-10-02 12:18:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:18,638 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:18:18,639 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:18:18,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:18:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:18:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:18:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-02 12:18:18,644 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-02 12:18:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:18,644 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-02 12:18:18,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:18:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-02 12:18:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:18:18,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:18,645 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1] [2018-10-02 12:18:18,645 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:18,646 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1953561005, now seen corresponding path program 5 times [2018-10-02 12:18:18,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:18,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:18,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:18,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:18,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:18,756 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:18,775 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:18:18,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:18,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:18,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:18,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:18:18,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:18:18,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:18:18,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:18,854 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 9 states. [2018-10-02 12:18:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:18,965 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-10-02 12:18:18,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:18:18,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-10-02 12:18:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:18,967 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:18:18,967 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:18:18,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:18:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:18:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:18:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:18:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-02 12:18:18,973 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-10-02 12:18:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:18,973 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-02 12:18:18,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:18:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-02 12:18:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:18:18,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:18,974 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1] [2018-10-02 12:18:18,974 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:18,974 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:18,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1729447159, now seen corresponding path program 6 times [2018-10-02 12:18:18,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:18,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:19,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:19,083 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 [2018-10-02 12:18:19,090 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:19,105 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:18:19,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:19,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:19,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:19,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-10-02 12:18:19,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:18:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:18:19,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:19,275 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 17 states. [2018-10-02 12:18:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:19,777 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2018-10-02 12:18:19,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:18:19,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-10-02 12:18:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:19,779 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:18:19,779 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:18:19,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:18:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:18:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-02 12:18:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:18:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-02 12:18:19,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2018-10-02 12:18:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:19,785 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-02 12:18:19,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:18:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-02 12:18:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:18:19,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:19,786 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1] [2018-10-02 12:18:19,786 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:19,786 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash 468808085, now seen corresponding path program 7 times [2018-10-02 12:18:19,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:19,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:19,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:19,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:19,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:19,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:19,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:19,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:19,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:20,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:20,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:18:20,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:18:20,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:18:20,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:20,063 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 10 states. [2018-10-02 12:18:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:20,208 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-10-02 12:18:20,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:18:20,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-10-02 12:18:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:20,209 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:18:20,209 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:18:20,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:18:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:18:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:18:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:18:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-02 12:18:20,214 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-02 12:18:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:20,215 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-02 12:18:20,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:18:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-02 12:18:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:18:20,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:20,216 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1] [2018-10-02 12:18:20,216 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:20,216 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:20,216 INFO L82 PathProgramCache]: Analyzing trace with hash 468808147, now seen corresponding path program 6 times [2018-10-02 12:18:20,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:20,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:20,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:20,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:20,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:20,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:20,540 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 [2018-10-02 12:18:20,548 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:20,561 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-10-02 12:18:20,561 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:20,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:20,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:20,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:18:20,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:18:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:18:20,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:20,647 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 11 states. [2018-10-02 12:18:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:20,742 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-02 12:18:20,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:18:20,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-10-02 12:18:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:20,744 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:18:20,744 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:18:20,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:18:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:18:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:18:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:18:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-02 12:18:20,748 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 26 [2018-10-02 12:18:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:20,749 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-02 12:18:20,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:18:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-02 12:18:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-02 12:18:20,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:20,750 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1] [2018-10-02 12:18:20,750 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:20,750 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -970547319, now seen corresponding path program 8 times [2018-10-02 12:18:20,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:20,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:20,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:20,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:20,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:20,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:20,872 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 [2018-10-02 12:18:20,887 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:20,926 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:20,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:20,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:21,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:21,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:18:21,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:18:21,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:18:21,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:21,158 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 11 states. [2018-10-02 12:18:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:21,407 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-10-02 12:18:21,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:18:21,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-10-02 12:18:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:21,408 INFO L225 Difference]: With dead ends: 36 [2018-10-02 12:18:21,409 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:18:21,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:18:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:18:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-02 12:18:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:18:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-10-02 12:18:21,413 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 29 [2018-10-02 12:18:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:21,413 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-10-02 12:18:21,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:18:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-10-02 12:18:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-02 12:18:21,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:21,414 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1] [2018-10-02 12:18:21,415 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:21,415 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash -970547257, now seen corresponding path program 7 times [2018-10-02 12:18:21,415 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:21,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:21,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:21,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:21,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:21,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:21,680 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 [2018-10-02 12:18:21,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:21,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:21,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:21,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:18:21,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:18:21,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:18:21,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:21,799 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 12 states. [2018-10-02 12:18:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:21,912 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-10-02 12:18:21,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:18:21,912 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-10-02 12:18:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:21,913 INFO L225 Difference]: With dead ends: 38 [2018-10-02 12:18:21,913 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:18:21,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:18:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-02 12:18:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:18:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-02 12:18:21,918 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2018-10-02 12:18:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:21,918 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-02 12:18:21,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:18:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-02 12:18:21,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:18:21,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:21,920 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1] [2018-10-02 12:18:21,920 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:21,920 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:21,920 INFO L82 PathProgramCache]: Analyzing trace with hash 146095381, now seen corresponding path program 9 times [2018-10-02 12:18:21,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:21,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:21,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:21,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:21,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 10 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:22,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:22,054 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:22,063 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:22,203 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-02 12:18:22,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:22,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:22,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:22,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2018-10-02 12:18:22,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:18:22,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:18:22,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:22,545 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 23 states. [2018-10-02 12:18:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:23,297 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-10-02 12:18:23,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:18:23,298 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 32 [2018-10-02 12:18:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:23,298 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:18:23,298 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:18:23,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:18:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:18:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:18:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:18:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-02 12:18:23,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 32 [2018-10-02 12:18:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:23,303 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-02 12:18:23,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:18:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-02 12:18:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-02 12:18:23,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:23,304 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2018-10-02 12:18:23,304 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:23,305 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1527063561, now seen corresponding path program 10 times [2018-10-02 12:18:23,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:23,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:23,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:23,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:23,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 11 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:23,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:23,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:23,478 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:23,492 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:23,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:23,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:23,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:23,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2018-10-02 12:18:23,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:18:23,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:18:23,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:23,705 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 25 states. [2018-10-02 12:18:24,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:24,294 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-10-02 12:18:24,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:18:24,295 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 35 [2018-10-02 12:18:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:24,296 INFO L225 Difference]: With dead ends: 44 [2018-10-02 12:18:24,296 INFO L226 Difference]: Without dead ends: 40 [2018-10-02 12:18:24,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:18:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-02 12:18:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-02 12:18:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-02 12:18:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-02 12:18:24,302 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2018-10-02 12:18:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:24,302 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-02 12:18:24,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:18:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-02 12:18:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:18:24,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:24,303 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1] [2018-10-02 12:18:24,304 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:24,304 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash 458385557, now seen corresponding path program 11 times [2018-10-02 12:18:24,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:24,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:24,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:24,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:24,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:24,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:24,431 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:24,439 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:24,526 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:18:24,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:24,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:24,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:24,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:18:24,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:18:24,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:18:24,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:24,780 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 14 states. [2018-10-02 12:18:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:24,892 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-10-02 12:18:24,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:18:24,892 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-02 12:18:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:24,893 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:18:24,893 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:18:24,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:18:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:18:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:18:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:18:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-02 12:18:24,900 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-02 12:18:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:24,900 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-02 12:18:24,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:18:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-02 12:18:24,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:18:24,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:24,901 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1] [2018-10-02 12:18:24,902 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:24,902 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:24,902 INFO L82 PathProgramCache]: Analyzing trace with hash 458385619, now seen corresponding path program 8 times [2018-10-02 12:18:24,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:24,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:24,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:24,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:24,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:25,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:25,169 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 [2018-10-02 12:18:25,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:25,189 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:25,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:25,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:25,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:25,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:18:25,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:18:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:18:25,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:25,339 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-02 12:18:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:25,509 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-10-02 12:18:25,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:18:25,510 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2018-10-02 12:18:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:25,511 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:18:25,511 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:18:25,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:18:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:18:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:18:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-02 12:18:25,517 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2018-10-02 12:18:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:25,517 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-02 12:18:25,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:18:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-02 12:18:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-02 12:18:25,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:25,518 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1] [2018-10-02 12:18:25,519 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:25,519 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2064533641, now seen corresponding path program 12 times [2018-10-02 12:18:25,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:25,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:25,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:25,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:25,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:26,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:26,278 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 [2018-10-02 12:18:26,286 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:26,309 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-02 12:18:26,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:26,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:27,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:27,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2018-10-02 12:18:27,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:18:27,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:18:27,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:27,165 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 29 states. [2018-10-02 12:18:28,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:28,130 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-10-02 12:18:28,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:18:28,132 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 41 [2018-10-02 12:18:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:28,132 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:18:28,132 INFO L226 Difference]: Without dead ends: 46 [2018-10-02 12:18:28,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:18:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-02 12:18:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-02 12:18:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-02 12:18:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-10-02 12:18:28,136 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2018-10-02 12:18:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:28,137 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-10-02 12:18:28,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:18:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-10-02 12:18:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:18:28,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:28,138 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1] [2018-10-02 12:18:28,138 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:28,138 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:28,138 INFO L82 PathProgramCache]: Analyzing trace with hash 591459349, now seen corresponding path program 13 times [2018-10-02 12:18:28,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:28,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:28,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:28,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:28,366 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 [2018-10-02 12:18:28,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:28,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:28,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:28,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:18:28,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:18:28,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:18:28,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:28,506 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2018-10-02 12:18:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:28,635 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-10-02 12:18:28,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:18:28,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2018-10-02 12:18:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:28,636 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:18:28,636 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:18:28,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:18:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:18:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:18:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-02 12:18:28,640 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-02 12:18:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:28,640 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-02 12:18:28,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:18:28,640 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-02 12:18:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:18:28,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:28,641 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1] [2018-10-02 12:18:28,641 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:28,642 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash 591459411, now seen corresponding path program 9 times [2018-10-02 12:18:28,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:28,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:28,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:28,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:28,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:28,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:28,881 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 [2018-10-02 12:18:28,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:28,916 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-02 12:18:28,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:28,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:29,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:29,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:18:29,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:18:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:18:29,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:29,023 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 17 states. [2018-10-02 12:18:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:29,129 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-10-02 12:18:29,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:18:29,129 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-02 12:18:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:29,130 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:18:29,131 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:18:29,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:18:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:18:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:18:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-02 12:18:29,135 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2018-10-02 12:18:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:29,135 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-02 12:18:29,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:18:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-02 12:18:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:18:29,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:29,136 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1] [2018-10-02 12:18:29,137 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:29,137 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910391, now seen corresponding path program 14 times [2018-10-02 12:18:29,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:29,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:29,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:29,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:29,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:29,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:29,310 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 [2018-10-02 12:18:29,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:29,360 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:29,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:29,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 15 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:29,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:29,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:18:29,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:18:29,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:18:29,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:29,483 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 17 states. [2018-10-02 12:18:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:29,624 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2018-10-02 12:18:29,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:18:29,624 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2018-10-02 12:18:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:29,625 INFO L225 Difference]: With dead ends: 54 [2018-10-02 12:18:29,625 INFO L226 Difference]: Without dead ends: 50 [2018-10-02 12:18:29,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-02 12:18:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-02 12:18:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-02 12:18:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-10-02 12:18:29,630 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2018-10-02 12:18:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:29,630 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-10-02 12:18:29,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:18:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-10-02 12:18:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:18:29,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:29,631 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1] [2018-10-02 12:18:29,631 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:29,631 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:29,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2083910329, now seen corresponding path program 10 times [2018-10-02 12:18:29,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:29,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:29,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:29,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:29,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:29,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:29,851 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 [2018-10-02 12:18:29,858 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:29,874 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:29,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:29,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:30,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:30,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:18:30,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:18:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:18:30,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:30,004 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 18 states. [2018-10-02 12:18:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:30,176 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-10-02 12:18:30,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:18:30,177 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2018-10-02 12:18:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:30,177 INFO L225 Difference]: With dead ends: 56 [2018-10-02 12:18:30,178 INFO L226 Difference]: Without dead ends: 52 [2018-10-02 12:18:30,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-02 12:18:30,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-02 12:18:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-02 12:18:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2018-10-02 12:18:30,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 47 [2018-10-02 12:18:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:30,182 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2018-10-02 12:18:30,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:18:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2018-10-02 12:18:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:18:30,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:30,183 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1] [2018-10-02 12:18:30,183 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:30,183 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:30,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1979244437, now seen corresponding path program 15 times [2018-10-02 12:18:30,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:30,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:30,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:30,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:30,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 16 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:31,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:31,027 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 [2018-10-02 12:18:31,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:31,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-02 12:18:31,070 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:31,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:31,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:31,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2018-10-02 12:18:31,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:18:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:18:31,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:31,411 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 35 states. [2018-10-02 12:18:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:32,298 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-10-02 12:18:32,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:18:32,298 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2018-10-02 12:18:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:32,299 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:18:32,299 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:18:32,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:18:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:18:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:18:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:18:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-02 12:18:32,304 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 50 [2018-10-02 12:18:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:32,304 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-02 12:18:32,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:18:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-02 12:18:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:18:32,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:32,305 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1] [2018-10-02 12:18:32,305 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:32,306 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:32,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545079, now seen corresponding path program 16 times [2018-10-02 12:18:32,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:32,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:32,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:32,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:32,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:32,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:32,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:32,661 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:32,679 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:32,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:32,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 17 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:32,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:32,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:18:32,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:18:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:18:32,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:32,831 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 19 states. [2018-10-02 12:18:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:33,099 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-10-02 12:18:33,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:18:33,099 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2018-10-02 12:18:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:33,100 INFO L225 Difference]: With dead ends: 60 [2018-10-02 12:18:33,100 INFO L226 Difference]: Without dead ends: 56 [2018-10-02 12:18:33,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:18:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-02 12:18:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-02 12:18:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-02 12:18:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-10-02 12:18:33,103 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 53 [2018-10-02 12:18:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:33,103 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-10-02 12:18:33,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:18:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-10-02 12:18:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:18:33,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:33,104 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 1, 1] [2018-10-02 12:18:33,104 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:33,104 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1933545017, now seen corresponding path program 11 times [2018-10-02 12:18:33,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:33,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:33,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:33,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:33,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:33,464 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 [2018-10-02 12:18:33,472 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:33,501 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-02 12:18:33,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:33,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:33,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:33,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:18:33,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:18:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:18:33,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:33,654 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 20 states. [2018-10-02 12:18:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:33,818 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-10-02 12:18:33,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:18:33,819 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-10-02 12:18:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:33,820 INFO L225 Difference]: With dead ends: 62 [2018-10-02 12:18:33,820 INFO L226 Difference]: Without dead ends: 58 [2018-10-02 12:18:33,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:18:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-02 12:18:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-02 12:18:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-02 12:18:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-10-02 12:18:33,824 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2018-10-02 12:18:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:33,824 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-10-02 12:18:33,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:18:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-10-02 12:18:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:18:33,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:33,825 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1] [2018-10-02 12:18:33,825 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:33,825 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:33,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364501, now seen corresponding path program 17 times [2018-10-02 12:18:33,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:33,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:33,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:33,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:34,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:34,093 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 [2018-10-02 12:18:34,104 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:34,156 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:18:34,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:34,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 18 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:34,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:34,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:18:34,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:18:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:18:34,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:34,294 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 20 states. [2018-10-02 12:18:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:34,435 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-10-02 12:18:34,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:18:34,435 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2018-10-02 12:18:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:34,436 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:18:34,436 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:18:34,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:18:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:18:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:18:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-02 12:18:34,440 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-02 12:18:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:34,440 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-02 12:18:34,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:18:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-02 12:18:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:18:34,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:34,441 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1] [2018-10-02 12:18:34,441 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:34,441 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:34,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1861364563, now seen corresponding path program 12 times [2018-10-02 12:18:34,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:34,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:34,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:34,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:34,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:34,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:34,988 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 [2018-10-02 12:18:34,997 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:35,027 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:18:35,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:35,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:35,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:35,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:18:35,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:18:35,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:18:35,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:35,355 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 21 states. [2018-10-02 12:18:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:35,518 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2018-10-02 12:18:35,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:18:35,519 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2018-10-02 12:18:35,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:35,520 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:18:35,520 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:18:35,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime [2018-10-02 12:18:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:18:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:18:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:18:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-02 12:18:35,524 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 56 [2018-10-02 12:18:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:35,524 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-02 12:18:35,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:18:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-02 12:18:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-02 12:18:35,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:35,525 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1] [2018-10-02 12:18:35,525 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:35,526 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:35,526 INFO L82 PathProgramCache]: Analyzing trace with hash -411470327, now seen corresponding path program 18 times [2018-10-02 12:18:35,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:35,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:35,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:35,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:35,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 19 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:35,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:35,756 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) [2018-10-02 12:18:35,771 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:18:35,817 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-02 12:18:35,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:35,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:36,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:36,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40 [2018-10-02 12:18:36,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:18:36,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:18:36,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:36,266 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 41 states. [2018-10-02 12:18:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:38,905 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2018-10-02 12:18:38,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:18:38,906 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 59 [2018-10-02 12:18:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:38,907 INFO L225 Difference]: With dead ends: 68 [2018-10-02 12:18:38,907 INFO L226 Difference]: Without dead ends: 64 [2018-10-02 12:18:38,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:18:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-02 12:18:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-02 12:18:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-02 12:18:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2018-10-02 12:18:38,911 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 59 [2018-10-02 12:18:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:38,912 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2018-10-02 12:18:38,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:18:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2018-10-02 12:18:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:18:38,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:38,912 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1] [2018-10-02 12:18:38,913 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:38,913 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:38,913 INFO L82 PathProgramCache]: Analyzing trace with hash -274409835, now seen corresponding path program 19 times [2018-10-02 12:18:38,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:38,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:38,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:38,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:38,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:39,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:39,289 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 [2018-10-02 12:18:39,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:39,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 20 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:39,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:39,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:18:39,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:18:39,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:18:39,445 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:39,445 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 22 states. [2018-10-02 12:18:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:39,641 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-10-02 12:18:39,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:18:39,642 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2018-10-02 12:18:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:39,643 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:18:39,643 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:18:39,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:18:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:18:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:18:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:18:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-02 12:18:39,647 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-02 12:18:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:39,647 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-02 12:18:39,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:18:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-02 12:18:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:18:39,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:39,648 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1] [2018-10-02 12:18:39,648 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:39,648 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash -274409773, now seen corresponding path program 13 times [2018-10-02 12:18:39,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:39,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:39,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:39,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:39,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:39,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:39,925 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 [2018-10-02 12:18:39,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:39,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:40,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:40,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:18:40,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:18:40,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:18:40,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:40,086 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 23 states. [2018-10-02 12:18:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:40,209 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-10-02 12:18:40,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:18:40,210 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2018-10-02 12:18:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:40,211 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:18:40,211 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:18:40,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:18:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:18:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:18:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-02 12:18:40,215 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 62 [2018-10-02 12:18:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:40,216 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-02 12:18:40,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:18:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-02 12:18:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-02 12:18:40,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:40,217 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1] [2018-10-02 12:18:40,217 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:40,217 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:40,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191159, now seen corresponding path program 20 times [2018-10-02 12:18:40,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:40,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:40,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:40,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:40,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:40,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:40,558 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 [2018-10-02 12:18:40,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:40,588 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:40,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:40,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 21 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:40,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:40,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:18:40,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:18:40,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:18:40,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:40,728 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 23 states. [2018-10-02 12:18:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:40,917 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-10-02 12:18:40,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:18:40,918 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2018-10-02 12:18:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:40,919 INFO L225 Difference]: With dead ends: 72 [2018-10-02 12:18:40,919 INFO L226 Difference]: Without dead ends: 68 [2018-10-02 12:18:40,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:18:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-02 12:18:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-02 12:18:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-02 12:18:40,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2018-10-02 12:18:40,923 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2018-10-02 12:18:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:40,923 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2018-10-02 12:18:40,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:18:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2018-10-02 12:18:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-02 12:18:40,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:40,924 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 1, 1] [2018-10-02 12:18:40,924 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:40,924 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1619191097, now seen corresponding path program 14 times [2018-10-02 12:18:40,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:40,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:40,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:40,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:40,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:41,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:41,232 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 [2018-10-02 12:18:41,240 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:41,262 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:41,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:41,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:41,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:41,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:18:41,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:18:41,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:18:41,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:41,390 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 24 states. [2018-10-02 12:18:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:41,494 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2018-10-02 12:18:41,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:18:41,494 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 65 [2018-10-02 12:18:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:41,495 INFO L225 Difference]: With dead ends: 74 [2018-10-02 12:18:41,495 INFO L226 Difference]: Without dead ends: 70 [2018-10-02 12:18:41,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:18:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-02 12:18:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-02 12:18:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-02 12:18:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-02 12:18:41,500 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2018-10-02 12:18:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:41,500 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-02 12:18:41,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:18:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-02 12:18:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:18:41,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:41,501 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1] [2018-10-02 12:18:41,501 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:41,502 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:41,502 INFO L82 PathProgramCache]: Analyzing trace with hash -544677355, now seen corresponding path program 21 times [2018-10-02 12:18:41,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:41,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:41,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:41,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:41,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 22 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:41,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:41,852 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:41,859 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:41,898 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-02 12:18:41,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:41,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:42,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:42,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2018-10-02 12:18:42,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:18:42,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:18:42,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:42,405 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 47 states. [2018-10-02 12:18:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:44,021 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2018-10-02 12:18:44,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:18:44,021 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 68 [2018-10-02 12:18:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:44,022 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:18:44,022 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:18:44,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:18:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:18:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:18:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:18:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-02 12:18:44,025 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 68 [2018-10-02 12:18:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:44,025 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-02 12:18:44,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:18:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-02 12:18:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-02 12:18:44,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:44,026 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1] [2018-10-02 12:18:44,026 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:44,026 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash -95199479, now seen corresponding path program 22 times [2018-10-02 12:18:44,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:44,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:44,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:44,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:44,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 23 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:44,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:44,960 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 [2018-10-02 12:18:44,968 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:44,990 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:44,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:44,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:45,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:45,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2018-10-02 12:18:45,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:18:45,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:18:45,515 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:45,515 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 49 states. [2018-10-02 12:18:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:47,043 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2018-10-02 12:18:47,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:18:47,043 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 71 [2018-10-02 12:18:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:47,044 INFO L225 Difference]: With dead ends: 80 [2018-10-02 12:18:47,044 INFO L226 Difference]: Without dead ends: 76 [2018-10-02 12:18:47,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:18:47,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-02 12:18:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-02 12:18:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-02 12:18:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-10-02 12:18:47,047 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 71 [2018-10-02 12:18:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:47,048 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-10-02 12:18:47,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:18:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-10-02 12:18:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:18:47,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:47,048 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1] [2018-10-02 12:18:47,048 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:47,049 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824491, now seen corresponding path program 23 times [2018-10-02 12:18:47,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:47,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:47,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:47,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:47,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:47,328 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 [2018-10-02 12:18:47,336 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:47,377 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:18:47,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:47,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 24 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:47,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:47,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:18:47,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:18:47,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:18:47,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:47,533 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 26 states. [2018-10-02 12:18:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:47,777 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-10-02 12:18:47,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:18:47,777 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2018-10-02 12:18:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:47,778 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:18:47,778 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:18:47,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:18:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:18:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:18:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:18:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-02 12:18:47,782 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-02 12:18:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:47,782 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-02 12:18:47,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:18:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-02 12:18:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:18:47,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:47,783 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 1, 1] [2018-10-02 12:18:47,783 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:47,783 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1407824429, now seen corresponding path program 15 times [2018-10-02 12:18:47,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:47,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:47,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:47,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:48,213 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:48,220 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:48,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-10-02 12:18:48,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:48,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:48,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:48,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:18:48,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:18:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:18:48,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:48,587 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 27 states. [2018-10-02 12:18:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:48,841 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2018-10-02 12:18:48,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:18:48,842 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 74 [2018-10-02 12:18:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:48,843 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:18:48,843 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:18:48,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:18:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:18:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:18:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:18:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-02 12:18:48,847 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 74 [2018-10-02 12:18:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:48,847 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-02 12:18:48,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:18:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-02 12:18:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-02 12:18:48,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:48,847 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1] [2018-10-02 12:18:48,848 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:48,848 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash -142326903, now seen corresponding path program 24 times [2018-10-02 12:18:48,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:48,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:48,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:48,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 25 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:49,245 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 [2018-10-02 12:18:49,253 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:18:49,296 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-02 12:18:49,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:49,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:49,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:49,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2018-10-02 12:18:49,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:18:49,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:18:49,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:49,861 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 53 states. [2018-10-02 12:18:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:51,506 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2018-10-02 12:18:51,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:18:51,506 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 77 [2018-10-02 12:18:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:51,507 INFO L225 Difference]: With dead ends: 86 [2018-10-02 12:18:51,507 INFO L226 Difference]: Without dead ends: 82 [2018-10-02 12:18:51,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:18:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-02 12:18:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-02 12:18:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-02 12:18:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-10-02 12:18:51,512 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 77 [2018-10-02 12:18:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:51,512 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-10-02 12:18:51,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:18:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-10-02 12:18:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:18:51,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:51,512 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1] [2018-10-02 12:18:51,513 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:51,513 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:51,513 INFO L82 PathProgramCache]: Analyzing trace with hash -926607083, now seen corresponding path program 25 times [2018-10-02 12:18:51,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:51,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:51,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:51,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:52,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:52,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:52,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 26 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:52,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:18:52,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:18:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:18:52,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:52,229 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 28 states. [2018-10-02 12:18:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:52,479 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-10-02 12:18:52,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:18:52,480 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2018-10-02 12:18:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:52,481 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:18:52,481 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:18:52,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:18:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:18:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:18:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:18:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-02 12:18:52,486 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-02 12:18:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:52,486 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-02 12:18:52,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:18:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-02 12:18:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:18:52,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:52,487 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 1, 1] [2018-10-02 12:18:52,488 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:52,488 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash -926607021, now seen corresponding path program 16 times [2018-10-02 12:18:52,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:52,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:52,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:52,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:52,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:52,803 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 [2018-10-02 12:18:52,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:52,838 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:52,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:52,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:53,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:18:53,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:18:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:18:53,011 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:53,012 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 29 states. [2018-10-02 12:18:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:53,223 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-10-02 12:18:53,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:18:53,223 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2018-10-02 12:18:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:53,224 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:18:53,224 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:18:53,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:18:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:18:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:18:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:18:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-02 12:18:53,229 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2018-10-02 12:18:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:53,229 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-02 12:18:53,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:18:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-02 12:18:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:18:53,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:53,230 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1] [2018-10-02 12:18:53,230 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:53,230 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:53,230 INFO L82 PathProgramCache]: Analyzing trace with hash -795359223, now seen corresponding path program 26 times [2018-10-02 12:18:53,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:53,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:53,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:53,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:53,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:53,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:18:53,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:53,898 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:53,899 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:53,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 27 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:54,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:54,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:18:54,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:18:54,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:18:54,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:54,040 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 29 states. [2018-10-02 12:18:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:54,300 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2018-10-02 12:18:54,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:18:54,301 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2018-10-02 12:18:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:54,302 INFO L225 Difference]: With dead ends: 90 [2018-10-02 12:18:54,302 INFO L226 Difference]: Without dead ends: 86 [2018-10-02 12:18:54,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:18:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-02 12:18:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-02 12:18:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-02 12:18:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-10-02 12:18:54,306 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 83 [2018-10-02 12:18:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:54,306 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-10-02 12:18:54,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:18:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-10-02 12:18:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:18:54,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:54,307 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 1, 1] [2018-10-02 12:18:54,307 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:54,307 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:54,307 INFO L82 PathProgramCache]: Analyzing trace with hash -795359161, now seen corresponding path program 17 times [2018-10-02 12:18:54,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:54,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:54,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:54,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:54,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:54,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:54,785 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 [2018-10-02 12:18:54,792 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:18:54,838 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-02 12:18:54,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:54,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:55,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:55,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:18:55,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:18:55,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:18:55,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:55,041 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 30 states. [2018-10-02 12:18:55,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:55,219 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-10-02 12:18:55,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:18:55,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 83 [2018-10-02 12:18:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:55,220 INFO L225 Difference]: With dead ends: 92 [2018-10-02 12:18:55,220 INFO L226 Difference]: Without dead ends: 88 [2018-10-02 12:18:55,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:18:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-02 12:18:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-02 12:18:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-02 12:18:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2018-10-02 12:18:55,224 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 83 [2018-10-02 12:18:55,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:55,224 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2018-10-02 12:18:55,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:18:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2018-10-02 12:18:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:18:55,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:55,225 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1] [2018-10-02 12:18:55,225 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:55,225 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash 789398677, now seen corresponding path program 27 times [2018-10-02 12:18:55,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:55,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:55,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:55,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 28 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:55,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:55,738 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 [2018-10-02 12:18:55,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:18:55,795 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-02 12:18:55,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:55,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:56,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:56,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2018-10-02 12:18:56,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:18:56,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:18:56,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:56,507 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 59 states. [2018-10-02 12:18:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:58,938 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-10-02 12:18:58,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:18:58,939 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 86 [2018-10-02 12:18:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:58,939 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:18:58,940 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:18:58,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime [2018-10-02 12:18:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:18:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:18:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:18:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-02 12:18:58,942 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2018-10-02 12:18:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:58,942 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-02 12:18:58,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:18:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-02 12:18:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-02 12:18:58,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:58,943 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1] [2018-10-02 12:18:58,943 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:58,943 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2031479945, now seen corresponding path program 28 times [2018-10-02 12:18:58,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:58,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:58,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:18:58,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:59,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:59,490 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 [2018-10-02 12:18:59,513 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:18:59,540 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:18:59,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:59,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 29 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:00,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:00,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:19:00,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:19:00,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:19:00,149 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:00,149 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 31 states. [2018-10-02 12:19:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:00,406 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-10-02 12:19:00,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:19:00,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 89 [2018-10-02 12:19:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:00,408 INFO L225 Difference]: With dead ends: 96 [2018-10-02 12:19:00,408 INFO L226 Difference]: Without dead ends: 92 [2018-10-02 12:19:00,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.3s impTime [2018-10-02 12:19:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-02 12:19:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-02 12:19:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-02 12:19:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2018-10-02 12:19:00,412 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 89 [2018-10-02 12:19:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:00,412 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2018-10-02 12:19:00,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:19:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2018-10-02 12:19:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-02 12:19:00,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:00,413 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 1, 1] [2018-10-02 12:19:00,413 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:00,413 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2031480007, now seen corresponding path program 18 times [2018-10-02 12:19:00,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:00,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:00,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:00,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:00,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:00,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:00,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:00,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:01,041 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2018-10-02 12:19:01,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:01,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:01,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:01,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:19:01,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:19:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:19:01,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:01,216 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 32 states. [2018-10-02 12:19:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:01,480 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-10-02 12:19:01,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:19:01,480 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 89 [2018-10-02 12:19:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:01,481 INFO L225 Difference]: With dead ends: 98 [2018-10-02 12:19:01,482 INFO L226 Difference]: Without dead ends: 94 [2018-10-02 12:19:01,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:19:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-02 12:19:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-02 12:19:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-02 12:19:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2018-10-02 12:19:01,486 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 89 [2018-10-02 12:19:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:01,486 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2018-10-02 12:19:01,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:19:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2018-10-02 12:19:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:19:01,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:01,487 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1] [2018-10-02 12:19:01,487 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:01,488 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -563687403, now seen corresponding path program 29 times [2018-10-02 12:19:01,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:01,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:01,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:01,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:01,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:01,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:01,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:01,861 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:01,919 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-02 12:19:01,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:01,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 30 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:02,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:02,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:19:02,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:19:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:19:02,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:02,096 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 32 states. [2018-10-02 12:19:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:02,443 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2018-10-02 12:19:02,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:19:02,443 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 92 [2018-10-02 12:19:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:02,448 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:19:02,448 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:19:02,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:19:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:19:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:19:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:19:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-02 12:19:02,453 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-02 12:19:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:02,453 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-02 12:19:02,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:19:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-02 12:19:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:19:02,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:02,454 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 1, 1] [2018-10-02 12:19:02,454 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:02,454 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:02,454 INFO L82 PathProgramCache]: Analyzing trace with hash -563687341, now seen corresponding path program 19 times [2018-10-02 12:19:02,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:02,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:02,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:02,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:02,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:04,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:04,182 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 [2018-10-02 12:19:04,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:04,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:04,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:04,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:19:04,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:19:04,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:19:04,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:04,432 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 33 states. [2018-10-02 12:19:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:04,692 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-10-02 12:19:04,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:19:04,693 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 92 [2018-10-02 12:19:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:04,694 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:19:04,694 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:19:04,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:19:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:19:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:19:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:19:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-02 12:19:04,698 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 92 [2018-10-02 12:19:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:04,698 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-02 12:19:04,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:19:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-02 12:19:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-02 12:19:04,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:04,699 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1] [2018-10-02 12:19:04,699 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:04,699 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash 512143625, now seen corresponding path program 30 times [2018-10-02 12:19:04,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:04,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:04,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:04,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:04,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 31 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:05,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:05,412 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 [2018-10-02 12:19:05,420 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:05,470 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-02 12:19:05,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:05,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:06,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:06,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64 [2018-10-02 12:19:06,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:19:06,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:19:06,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:06,298 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 65 states. [2018-10-02 12:19:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:08,478 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2018-10-02 12:19:08,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:19:08,479 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 95 [2018-10-02 12:19:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:08,480 INFO L225 Difference]: With dead ends: 104 [2018-10-02 12:19:08,481 INFO L226 Difference]: Without dead ends: 100 [2018-10-02 12:19:08,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime [2018-10-02 12:19:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-02 12:19:08,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-02 12:19:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-02 12:19:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-10-02 12:19:08,485 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 95 [2018-10-02 12:19:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:08,485 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-10-02 12:19:08,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:19:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-10-02 12:19:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:19:08,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:08,486 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1] [2018-10-02 12:19:08,486 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:08,486 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:08,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336021, now seen corresponding path program 31 times [2018-10-02 12:19:08,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:08,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:08,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:08,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:09,176 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 [2018-10-02 12:19:09,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:09,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 32 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:09,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:09,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:19:09,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:19:09,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:19:09,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:09,393 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 34 states. [2018-10-02 12:19:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:09,586 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2018-10-02 12:19:09,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:19:09,586 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 98 [2018-10-02 12:19:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:09,587 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:19:09,588 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:19:09,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:19:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:19:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:19:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:19:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-02 12:19:09,593 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-02 12:19:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:09,593 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-02 12:19:09,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:19:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-02 12:19:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:19:09,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:09,594 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 1, 1] [2018-10-02 12:19:09,594 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:09,595 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1548336083, now seen corresponding path program 20 times [2018-10-02 12:19:09,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:09,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:09,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:09,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:10,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:10,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:10,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:10,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:10,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:10,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:10,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:19:10,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:19:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:19:10,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:10,521 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 35 states. [2018-10-02 12:19:10,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:10,797 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2018-10-02 12:19:10,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:19:10,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 98 [2018-10-02 12:19:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:10,799 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:19:10,799 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:19:10,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:19:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:19:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:19:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:19:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-02 12:19:10,804 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2018-10-02 12:19:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:10,805 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-02 12:19:10,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:19:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-02 12:19:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-02 12:19:10,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:10,806 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1] [2018-10-02 12:19:10,806 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:10,806 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918391, now seen corresponding path program 32 times [2018-10-02 12:19:10,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:10,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:10,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:10,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:11,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:11,729 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 [2018-10-02 12:19:11,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:11,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:11,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:11,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 33 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:12,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:12,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:19:12,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:19:12,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:19:12,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:12,043 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 35 states. [2018-10-02 12:19:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:12,238 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2018-10-02 12:19:12,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:19:12,238 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 101 [2018-10-02 12:19:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:12,240 INFO L225 Difference]: With dead ends: 108 [2018-10-02 12:19:12,240 INFO L226 Difference]: Without dead ends: 104 [2018-10-02 12:19:12,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-02 12:19:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-02 12:19:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-02 12:19:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2018-10-02 12:19:12,245 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 101 [2018-10-02 12:19:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:12,245 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2018-10-02 12:19:12,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:19:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2018-10-02 12:19:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-02 12:19:12,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:12,246 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 1, 1] [2018-10-02 12:19:12,246 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:12,246 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1468918329, now seen corresponding path program 21 times [2018-10-02 12:19:12,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:12,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:12,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:12,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:14,430 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:14,438 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:14,489 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-02 12:19:14,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:14,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:14,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:14,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:19:14,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:19:14,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:19:14,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:14,674 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 36 states. [2018-10-02 12:19:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:14,975 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2018-10-02 12:19:14,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:19:14,976 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 101 [2018-10-02 12:19:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:14,977 INFO L225 Difference]: With dead ends: 110 [2018-10-02 12:19:14,977 INFO L226 Difference]: Without dead ends: 106 [2018-10-02 12:19:14,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:19:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-02 12:19:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-02 12:19:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-02 12:19:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-10-02 12:19:14,982 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 101 [2018-10-02 12:19:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:14,982 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-10-02 12:19:14,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:19:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-10-02 12:19:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:19:14,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:14,983 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1] [2018-10-02 12:19:14,983 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:14,983 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:14,984 INFO L82 PathProgramCache]: Analyzing trace with hash 875431701, now seen corresponding path program 33 times [2018-10-02 12:19:14,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:14,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:14,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:14,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 34 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:15,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:15,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:15,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:15,838 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-02 12:19:15,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:15,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:16,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:16,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2018-10-02 12:19:16,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:19:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:19:16,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:16,808 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 71 states. [2018-10-02 12:19:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:19,554 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2018-10-02 12:19:19,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:19:19,555 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 104 [2018-10-02 12:19:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:19,556 INFO L225 Difference]: With dead ends: 113 [2018-10-02 12:19:19,556 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:19:19,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.1s impTime [2018-10-02 12:19:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:19:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-02 12:19:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:19:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-02 12:19:19,560 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 104 [2018-10-02 12:19:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:19,561 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-02 12:19:19,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:19:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-02 12:19:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-02 12:19:19,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:19,561 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1] [2018-10-02 12:19:19,562 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:19,562 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash 945822217, now seen corresponding path program 34 times [2018-10-02 12:19:19,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:19,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:19,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:19,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:20,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:20,071 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:20,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:20,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:20,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 35 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:20,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:20,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:19:20,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:19:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:19:20,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:20,385 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 37 states. [2018-10-02 12:19:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:20,939 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2018-10-02 12:19:20,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:19:20,939 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 107 [2018-10-02 12:19:20,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:20,940 INFO L225 Difference]: With dead ends: 114 [2018-10-02 12:19:20,940 INFO L226 Difference]: Without dead ends: 110 [2018-10-02 12:19:20,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime [2018-10-02 12:19:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-02 12:19:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-02 12:19:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-02 12:19:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-10-02 12:19:20,946 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 107 [2018-10-02 12:19:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:20,946 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-10-02 12:19:20,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:19:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-10-02 12:19:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-02 12:19:20,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:20,947 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 1, 1] [2018-10-02 12:19:20,947 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:20,948 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:20,948 INFO L82 PathProgramCache]: Analyzing trace with hash 945822279, now seen corresponding path program 22 times [2018-10-02 12:19:20,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:20,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:20,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:20,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:21,575 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 [2018-10-02 12:19:21,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:21,641 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:21,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:21,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:21,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:21,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:19:21,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:19:21,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:19:21,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:21,850 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 38 states. [2018-10-02 12:19:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:22,163 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2018-10-02 12:19:22,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:19:22,163 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 107 [2018-10-02 12:19:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:22,164 INFO L225 Difference]: With dead ends: 116 [2018-10-02 12:19:22,164 INFO L226 Difference]: Without dead ends: 112 [2018-10-02 12:19:22,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:19:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-02 12:19:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-02 12:19:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-02 12:19:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2018-10-02 12:19:22,169 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 107 [2018-10-02 12:19:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:22,169 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2018-10-02 12:19:22,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:19:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2018-10-02 12:19:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:19:22,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:22,169 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1] [2018-10-02 12:19:22,170 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:22,170 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:22,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643925, now seen corresponding path program 35 times [2018-10-02 12:19:22,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:22,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:22,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:22,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:24,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:24,564 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:24,630 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:19:24,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:24,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 36 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:24,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:24,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:19:24,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:19:24,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:19:24,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:24,883 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand 38 states. [2018-10-02 12:19:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:25,128 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2018-10-02 12:19:25,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:19:25,128 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 110 [2018-10-02 12:19:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:25,129 INFO L225 Difference]: With dead ends: 117 [2018-10-02 12:19:25,129 INFO L226 Difference]: Without dead ends: 113 [2018-10-02 12:19:25,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime [2018-10-02 12:19:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-02 12:19:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-02 12:19:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-02 12:19:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-02 12:19:25,133 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-02 12:19:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:25,134 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-02 12:19:25,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:19:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-02 12:19:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:19:25,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:25,135 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 1, 1] [2018-10-02 12:19:25,135 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:25,135 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:25,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2005643987, now seen corresponding path program 23 times [2018-10-02 12:19:25,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:25,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:25,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:25,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:25,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:25,805 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 [2018-10-02 12:19:25,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:25,876 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:19:25,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:25,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:26,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:26,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:19:26,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:19:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:19:26,077 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:26,078 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 39 states. [2018-10-02 12:19:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:26,235 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-10-02 12:19:26,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:19:26,235 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2018-10-02 12:19:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:26,236 INFO L225 Difference]: With dead ends: 119 [2018-10-02 12:19:26,237 INFO L226 Difference]: Without dead ends: 115 [2018-10-02 12:19:26,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:19:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-02 12:19:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-02 12:19:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:19:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-02 12:19:26,241 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 110 [2018-10-02 12:19:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:26,241 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-02 12:19:26,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:19:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-02 12:19:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-02 12:19:26,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:26,241 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1] [2018-10-02 12:19:26,242 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:26,242 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1445413239, now seen corresponding path program 36 times [2018-10-02 12:19:26,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:26,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 37 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:27,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:27,985 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:27,993 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:28,059 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-02 12:19:28,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:28,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:29,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:29,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76 [2018-10-02 12:19:29,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:19:29,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:19:29,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:29,301 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 77 states. [2018-10-02 12:19:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:32,471 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2018-10-02 12:19:32,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:19:32,471 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 113 [2018-10-02 12:19:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:32,472 INFO L225 Difference]: With dead ends: 122 [2018-10-02 12:19:32,472 INFO L226 Difference]: Without dead ends: 118 [2018-10-02 12:19:32,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time 4.3s impTime [2018-10-02 12:19:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-02 12:19:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-02 12:19:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-02 12:19:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2018-10-02 12:19:32,477 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 113 [2018-10-02 12:19:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:32,477 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2018-10-02 12:19:32,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:19:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2018-10-02 12:19:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-02 12:19:32,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:32,478 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1] [2018-10-02 12:19:32,478 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:32,478 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:32,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745685, now seen corresponding path program 37 times [2018-10-02 12:19:32,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:32,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:32,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:32,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:34,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:34,237 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 [2018-10-02 12:19:34,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:34,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 38 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:35,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:35,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:19:35,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:19:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:19:35,802 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:35,802 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 40 states. [2018-10-02 12:19:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:36,140 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2018-10-02 12:19:36,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:19:36,140 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 116 [2018-10-02 12:19:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:36,141 INFO L225 Difference]: With dead ends: 123 [2018-10-02 12:19:36,141 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:19:36,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 1.3s impTime [2018-10-02 12:19:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:19:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-02 12:19:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:19:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-02 12:19:36,145 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-02 12:19:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:36,145 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-02 12:19:36,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:19:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-02 12:19:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-02 12:19:36,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:36,146 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1] [2018-10-02 12:19:36,146 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:36,147 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1037745747, now seen corresponding path program 24 times [2018-10-02 12:19:36,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:36,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:36,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:36,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:36,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:36,726 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 [2018-10-02 12:19:36,735 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:37,191 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2018-10-02 12:19:37,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:37,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:37,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:37,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:19:37,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:19:37,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:19:37,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:37,533 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 41 states. [2018-10-02 12:19:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:37,757 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2018-10-02 12:19:37,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:19:37,758 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 116 [2018-10-02 12:19:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:37,759 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:19:37,759 INFO L226 Difference]: Without dead ends: 121 [2018-10-02 12:19:37,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:19:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-02 12:19:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-02 12:19:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-02 12:19:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-02 12:19:37,763 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 116 [2018-10-02 12:19:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:37,764 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-02 12:19:37,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:19:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-02 12:19:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-02 12:19:37,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:37,764 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1] [2018-10-02 12:19:37,764 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:37,765 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:37,765 INFO L82 PathProgramCache]: Analyzing trace with hash 308544265, now seen corresponding path program 38 times [2018-10-02 12:19:37,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:37,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:37,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:37,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:38,494 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 [2018-10-02 12:19:38,512 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:38,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:38,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:38,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 39 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:38,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:38,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:19:38,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:19:38,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:19:38,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:38,834 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 41 states. [2018-10-02 12:19:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:39,172 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2018-10-02 12:19:39,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:19:39,173 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 119 [2018-10-02 12:19:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:39,174 INFO L225 Difference]: With dead ends: 126 [2018-10-02 12:19:39,174 INFO L226 Difference]: Without dead ends: 122 [2018-10-02 12:19:39,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:19:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-02 12:19:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-10-02 12:19:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-02 12:19:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-10-02 12:19:39,177 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 119 [2018-10-02 12:19:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:39,177 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-10-02 12:19:39,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:19:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-10-02 12:19:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-02 12:19:39,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:39,178 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 1, 1] [2018-10-02 12:19:39,178 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:39,178 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:39,179 INFO L82 PathProgramCache]: Analyzing trace with hash 308544327, now seen corresponding path program 25 times [2018-10-02 12:19:39,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:39,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:39,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:39,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:40,262 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 [2018-10-02 12:19:40,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:40,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:40,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:40,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:19:40,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:19:40,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:19:40,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:40,513 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 42 states. [2018-10-02 12:19:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:40,855 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2018-10-02 12:19:40,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:19:40,855 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 119 [2018-10-02 12:19:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:40,856 INFO L225 Difference]: With dead ends: 128 [2018-10-02 12:19:40,857 INFO L226 Difference]: Without dead ends: 124 [2018-10-02 12:19:40,857 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:19:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-02 12:19:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-10-02 12:19:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-02 12:19:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2018-10-02 12:19:40,860 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 119 [2018-10-02 12:19:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:40,861 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2018-10-02 12:19:40,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:19:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2018-10-02 12:19:40,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:19:40,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:40,862 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1] [2018-10-02 12:19:40,862 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:40,862 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash 613624213, now seen corresponding path program 39 times [2018-10-02 12:19:40,862 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:40,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:40,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 40 proven. 2340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:41,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:41,402 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 [2018-10-02 12:19:41,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:41,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-02 12:19:41,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:41,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:42,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:42,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82 [2018-10-02 12:19:42,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:19:42,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:19:42,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:42,827 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand 83 states. [2018-10-02 12:19:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:45,993 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2018-10-02 12:19:45,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:19:45,993 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 122 [2018-10-02 12:19:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:45,994 INFO L225 Difference]: With dead ends: 131 [2018-10-02 12:19:45,995 INFO L226 Difference]: Without dead ends: 127 [2018-10-02 12:19:45,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.5s impTime [2018-10-02 12:19:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-02 12:19:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-02 12:19:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-02 12:19:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-02 12:19:45,997 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 122 [2018-10-02 12:19:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:45,998 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-02 12:19:45,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:19:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-02 12:19:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-02 12:19:45,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:45,998 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1] [2018-10-02 12:19:45,998 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:45,999 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556745, now seen corresponding path program 40 times [2018-10-02 12:19:45,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:45,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:45,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:45,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:46,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:46,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:46,649 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:46,689 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:46,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:46,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 41 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:46,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:46,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:19:46,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:19:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:19:46,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:46,912 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 43 states. [2018-10-02 12:19:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:47,237 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2018-10-02 12:19:47,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:19:47,238 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 125 [2018-10-02 12:19:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:47,239 INFO L225 Difference]: With dead ends: 132 [2018-10-02 12:19:47,239 INFO L226 Difference]: Without dead ends: 128 [2018-10-02 12:19:47,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:19:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-02 12:19:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-10-02 12:19:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-02 12:19:47,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2018-10-02 12:19:47,244 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 125 [2018-10-02 12:19:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:47,244 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2018-10-02 12:19:47,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:19:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2018-10-02 12:19:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-02 12:19:47,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:47,245 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 1, 1] [2018-10-02 12:19:47,245 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:47,246 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1099556807, now seen corresponding path program 26 times [2018-10-02 12:19:47,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:47,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:47,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:47,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:47,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:47,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:19:48,005 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:19:48,041 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:19:48,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:48,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:48,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:48,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:19:48,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:19:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:19:48,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:48,454 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 44 states. [2018-10-02 12:19:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:48,612 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2018-10-02 12:19:48,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:19:48,612 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 125 [2018-10-02 12:19:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:48,613 INFO L225 Difference]: With dead ends: 134 [2018-10-02 12:19:48,613 INFO L226 Difference]: Without dead ends: 130 [2018-10-02 12:19:48,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:19:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-10-02 12:19:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-10-02 12:19:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-02 12:19:48,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-10-02 12:19:48,617 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 125 [2018-10-02 12:19:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:48,617 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-10-02 12:19:48,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:19:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-10-02 12:19:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:19:48,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:48,618 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1] [2018-10-02 12:19:48,618 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:48,618 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:48,618 INFO L82 PathProgramCache]: Analyzing trace with hash -819137259, now seen corresponding path program 41 times [2018-10-02 12:19:48,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:48,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:48,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:48,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:49,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:49,327 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 [2018-10-02 12:19:49,334 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:19:49,404 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-02 12:19:49,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:49,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 42 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:50,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:50,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:19:50,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:19:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:19:50,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:50,386 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 44 states. [2018-10-02 12:19:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:50,812 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2018-10-02 12:19:50,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:19:50,813 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 128 [2018-10-02 12:19:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:50,814 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:19:50,814 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:19:50,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.5s impTime [2018-10-02 12:19:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:19:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:19:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:19:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-02 12:19:50,818 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-02 12:19:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:50,818 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-02 12:19:50,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:19:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-02 12:19:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:19:50,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:50,819 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 1, 1] [2018-10-02 12:19:50,819 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:50,819 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash -819137197, now seen corresponding path program 27 times [2018-10-02 12:19:50,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:50,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:50,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:50,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:50,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:51,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:51,362 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 [2018-10-02 12:19:51,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:19:51,447 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 43 check-sat command(s) [2018-10-02 12:19:51,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:51,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:51,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:51,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:19:51,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:19:51,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:19:51,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:51,766 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 45 states. [2018-10-02 12:19:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:52,095 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2018-10-02 12:19:52,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:19:52,096 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 128 [2018-10-02 12:19:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:52,097 INFO L225 Difference]: With dead ends: 137 [2018-10-02 12:19:52,097 INFO L226 Difference]: Without dead ends: 133 [2018-10-02 12:19:52,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:19:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-02 12:19:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-02 12:19:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-02 12:19:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-02 12:19:52,101 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 128 [2018-10-02 12:19:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:52,102 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-02 12:19:52,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:19:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-02 12:19:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-02 12:19:52,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:52,103 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1] [2018-10-02 12:19:52,103 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:52,103 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1087532041, now seen corresponding path program 42 times [2018-10-02 12:19:52,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:52,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:52,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 43 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:52,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:52,648 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 [2018-10-02 12:19:52,655 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:19:52,731 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-02 12:19:52,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:52,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:53,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:53,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88 [2018-10-02 12:19:53,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:19:53,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:19:53,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:53,862 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 89 states. [2018-10-02 12:19:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:56,976 INFO L93 Difference]: Finished difference Result 140 states and 147 transitions. [2018-10-02 12:19:56,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:19:56,977 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 131 [2018-10-02 12:19:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:56,978 INFO L225 Difference]: With dead ends: 140 [2018-10-02 12:19:56,978 INFO L226 Difference]: Without dead ends: 136 [2018-10-02 12:19:56,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.3s impTime [2018-10-02 12:19:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-02 12:19:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-02 12:19:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-02 12:19:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-10-02 12:19:56,981 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 131 [2018-10-02 12:19:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:56,981 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-10-02 12:19:56,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:19:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-10-02 12:19:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:19:56,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:56,982 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1] [2018-10-02 12:19:56,982 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:56,982 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:56,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158741, now seen corresponding path program 43 times [2018-10-02 12:19:56,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:56,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:56,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:56,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:57,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:57,709 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 [2018-10-02 12:19:57,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:57,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 44 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:58,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:58,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:19:58,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:19:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:19:58,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:58,003 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 46 states. [2018-10-02 12:19:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:58,353 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2018-10-02 12:19:58,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:19:58,353 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 134 [2018-10-02 12:19:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:58,354 INFO L225 Difference]: With dead ends: 141 [2018-10-02 12:19:58,355 INFO L226 Difference]: Without dead ends: 137 [2018-10-02 12:19:58,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:19:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-02 12:19:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-02 12:19:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-02 12:19:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-02 12:19:58,358 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-02 12:19:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:58,358 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-02 12:19:58,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:19:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-02 12:19:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:19:58,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:58,359 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 1, 1] [2018-10-02 12:19:58,359 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:58,359 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1730158803, now seen corresponding path program 28 times [2018-10-02 12:19:58,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:58,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:58,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:19:58,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:19:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:19:59,061 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 [2018-10-02 12:19:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:19:59,105 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:19:59,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:19:59,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:19:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:19:59,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:19:59,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:19:59,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:19:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:19:59,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:19:59,337 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 47 states. [2018-10-02 12:19:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:19:59,534 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2018-10-02 12:19:59,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:19:59,535 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 134 [2018-10-02 12:19:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:19:59,536 INFO L225 Difference]: With dead ends: 143 [2018-10-02 12:19:59,536 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:19:59,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:19:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:19:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-02 12:19:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:19:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-02 12:19:59,540 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 134 [2018-10-02 12:19:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:19:59,540 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-02 12:19:59,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:19:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-02 12:19:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-02 12:19:59,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:19:59,541 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1] [2018-10-02 12:19:59,541 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:19:59,541 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:19:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash -742027127, now seen corresponding path program 44 times [2018-10-02 12:19:59,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:19:59,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:19:59,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:19:59,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:19:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:00,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:00,715 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 [2018-10-02 12:20:00,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:00,763 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:00,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:00,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 45 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:01,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:01,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:20:01,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:20:01,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:20:01,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:01,007 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 47 states. [2018-10-02 12:20:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:01,378 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2018-10-02 12:20:01,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:20:01,379 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 137 [2018-10-02 12:20:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:01,380 INFO L225 Difference]: With dead ends: 144 [2018-10-02 12:20:01,380 INFO L226 Difference]: Without dead ends: 140 [2018-10-02 12:20:01,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:20:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-10-02 12:20:01,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-10-02 12:20:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-02 12:20:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-10-02 12:20:01,385 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 137 [2018-10-02 12:20:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:01,385 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-10-02 12:20:01,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:20:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-10-02 12:20:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-02 12:20:01,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:01,386 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 1, 1] [2018-10-02 12:20:01,386 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:01,386 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash -742027065, now seen corresponding path program 29 times [2018-10-02 12:20:01,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:01,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:01,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:01,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:02,054 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:02,061 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:02,140 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-02 12:20:02,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:02,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:02,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:02,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:20:02,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:20:02,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:20:02,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:02,385 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 48 states. [2018-10-02 12:20:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:02,721 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-10-02 12:20:02,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:20:02,722 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 137 [2018-10-02 12:20:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:02,723 INFO L225 Difference]: With dead ends: 146 [2018-10-02 12:20:02,723 INFO L226 Difference]: Without dead ends: 142 [2018-10-02 12:20:02,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:20:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-02 12:20:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-10-02 12:20:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-02 12:20:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2018-10-02 12:20:02,729 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 137 [2018-10-02 12:20:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:02,729 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2018-10-02 12:20:02,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:20:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2018-10-02 12:20:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-02 12:20:02,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:02,730 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1] [2018-10-02 12:20:02,730 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:02,730 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 467971093, now seen corresponding path program 45 times [2018-10-02 12:20:02,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:02,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:02,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:02,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:03,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:03,340 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 [2018-10-02 12:20:03,346 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:03,779 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-02 12:20:03,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:03,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 46 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:04,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:04,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:20:04,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:20:04,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:20:04,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:04,032 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 48 states. [2018-10-02 12:20:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:04,735 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2018-10-02 12:20:04,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:20:04,735 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 140 [2018-10-02 12:20:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:04,736 INFO L225 Difference]: With dead ends: 147 [2018-10-02 12:20:04,737 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:20:04,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:20:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:20:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-02 12:20:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-02 12:20:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-02 12:20:04,741 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-02 12:20:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:04,741 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-02 12:20:04,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:20:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-02 12:20:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-02 12:20:04,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:04,742 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 1, 1] [2018-10-02 12:20:04,743 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:04,743 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:04,743 INFO L82 PathProgramCache]: Analyzing trace with hash 467971155, now seen corresponding path program 30 times [2018-10-02 12:20:04,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:04,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:04,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:04,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:04,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:05,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:05,914 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 [2018-10-02 12:20:05,920 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:06,002 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2018-10-02 12:20:06,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:06,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:06,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:06,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:20:06,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:20:06,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:20:06,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:06,286 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 49 states. [2018-10-02 12:20:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:06,662 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-02 12:20:06,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:20:06,663 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 140 [2018-10-02 12:20:06,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:06,664 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:20:06,664 INFO L226 Difference]: Without dead ends: 145 [2018-10-02 12:20:06,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:20:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-02 12:20:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-02 12:20:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-02 12:20:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-02 12:20:06,668 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 140 [2018-10-02 12:20:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:06,668 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-02 12:20:06,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:20:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-02 12:20:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-02 12:20:06,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:06,669 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1] [2018-10-02 12:20:06,670 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:06,670 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash -135572215, now seen corresponding path program 46 times [2018-10-02 12:20:06,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:06,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:06,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:06,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 47 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:07,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:07,696 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 [2018-10-02 12:20:07,703 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:07,743 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:07,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:07,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:09,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:09,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96 [2018-10-02 12:20:09,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:20:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:20:09,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:09,424 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 97 states. [2018-10-02 12:20:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:13,656 INFO L93 Difference]: Finished difference Result 152 states and 159 transitions. [2018-10-02 12:20:13,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:20:13,656 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 143 [2018-10-02 12:20:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:13,657 INFO L225 Difference]: With dead ends: 152 [2018-10-02 12:20:13,657 INFO L226 Difference]: Without dead ends: 148 [2018-10-02 12:20:13,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time 5.1s impTime [2018-10-02 12:20:13,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-02 12:20:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-10-02 12:20:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-10-02 12:20:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2018-10-02 12:20:13,661 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 143 [2018-10-02 12:20:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:13,662 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2018-10-02 12:20:13,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:20:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2018-10-02 12:20:13,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:20:13,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:13,663 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1] [2018-10-02 12:20:13,663 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:13,663 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:13,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159787, now seen corresponding path program 47 times [2018-10-02 12:20:13,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:13,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:13,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:13,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:14,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:14,859 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 [2018-10-02 12:20:14,879 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:14,966 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-02 12:20:14,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:14,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 48 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:15,268 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:15,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:20:15,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:20:15,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:20:15,269 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:15,269 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 50 states. [2018-10-02 12:20:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:15,864 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2018-10-02 12:20:15,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:20:15,864 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 146 [2018-10-02 12:20:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:15,865 INFO L225 Difference]: With dead ends: 153 [2018-10-02 12:20:15,866 INFO L226 Difference]: Without dead ends: 149 [2018-10-02 12:20:15,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:20:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-02 12:20:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-02 12:20:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:20:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-02 12:20:15,869 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-02 12:20:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:15,869 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-02 12:20:15,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:20:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-02 12:20:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:20:15,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:15,870 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 1, 1] [2018-10-02 12:20:15,870 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:15,870 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:15,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1561159725, now seen corresponding path program 31 times [2018-10-02 12:20:15,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:15,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:15,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:15,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:16,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:16,727 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:16,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:16,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:17,018 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:17,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:20:17,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:20:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:20:17,019 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:17,019 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 51 states. [2018-10-02 12:20:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:17,410 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2018-10-02 12:20:17,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:20:17,410 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 146 [2018-10-02 12:20:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:17,411 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:20:17,411 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:20:17,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:20:17,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:20:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:20:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:20:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-02 12:20:17,415 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 146 [2018-10-02 12:20:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:17,415 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-02 12:20:17,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:20:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-02 12:20:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-02 12:20:17,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:17,416 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1] [2018-10-02 12:20:17,416 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:17,416 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:17,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1691072905, now seen corresponding path program 48 times [2018-10-02 12:20:17,417 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:17,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:17,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:17,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 49 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:18,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:18,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:18,274 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:18,357 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-02 12:20:18,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:18,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:20,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:20,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100 [2018-10-02 12:20:20,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:20:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:20:20,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:20,080 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 101 states. [2018-10-02 12:20:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:24,388 INFO L93 Difference]: Finished difference Result 158 states and 165 transitions. [2018-10-02 12:20:24,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:20:24,389 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 149 [2018-10-02 12:20:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:24,390 INFO L225 Difference]: With dead ends: 158 [2018-10-02 12:20:24,390 INFO L226 Difference]: Without dead ends: 154 [2018-10-02 12:20:24,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s Time 5.0s impTime [2018-10-02 12:20:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-02 12:20:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-10-02 12:20:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-02 12:20:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2018-10-02 12:20:24,395 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 149 [2018-10-02 12:20:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:24,396 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2018-10-02 12:20:24,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:20:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2018-10-02 12:20:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:20:24,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:24,397 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1] [2018-10-02 12:20:24,397 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:24,397 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030187, now seen corresponding path program 49 times [2018-10-02 12:20:24,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:24,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:24,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:25,224 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 [2018-10-02 12:20:25,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:25,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 50 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:25,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:25,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:20:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:20:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:20:25,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:25,641 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 52 states. [2018-10-02 12:20:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:26,206 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2018-10-02 12:20:26,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:20:26,206 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 152 [2018-10-02 12:20:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:26,208 INFO L225 Difference]: With dead ends: 159 [2018-10-02 12:20:26,208 INFO L226 Difference]: Without dead ends: 155 [2018-10-02 12:20:26,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:20:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-02 12:20:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-02 12:20:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:20:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-02 12:20:26,213 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-02 12:20:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:26,213 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-02 12:20:26,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:20:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-02 12:20:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:20:26,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:26,215 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 1, 1] [2018-10-02 12:20:26,215 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:26,215 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:26,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1212030125, now seen corresponding path program 32 times [2018-10-02 12:20:26,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:26,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:26,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:26,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:26,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:27,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:27,752 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 [2018-10-02 12:20:27,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:27,809 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:27,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:27,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:28,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:28,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:20:28,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:20:28,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:20:28,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:28,112 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 53 states. [2018-10-02 12:20:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:28,650 INFO L93 Difference]: Finished difference Result 161 states and 167 transitions. [2018-10-02 12:20:28,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:20:28,650 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 152 [2018-10-02 12:20:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:28,651 INFO L225 Difference]: With dead ends: 161 [2018-10-02 12:20:28,651 INFO L226 Difference]: Without dead ends: 157 [2018-10-02 12:20:28,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:20:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-02 12:20:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-02 12:20:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-02 12:20:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-02 12:20:28,657 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 152 [2018-10-02 12:20:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:28,657 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-02 12:20:28,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:20:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-02 12:20:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-02 12:20:28,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:28,658 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1] [2018-10-02 12:20:28,659 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:28,659 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:28,659 INFO L82 PathProgramCache]: Analyzing trace with hash 200195593, now seen corresponding path program 50 times [2018-10-02 12:20:28,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:28,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:28,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:28,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:28,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:29,419 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 [2018-10-02 12:20:29,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:29,489 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:29,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:29,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 51 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:29,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:29,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:20:29,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:20:29,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:20:29,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:29,902 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 53 states. [2018-10-02 12:20:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:30,235 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2018-10-02 12:20:30,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:20:30,235 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 155 [2018-10-02 12:20:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:30,236 INFO L225 Difference]: With dead ends: 162 [2018-10-02 12:20:30,237 INFO L226 Difference]: Without dead ends: 158 [2018-10-02 12:20:30,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:20:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-02 12:20:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2018-10-02 12:20:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-02 12:20:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2018-10-02 12:20:30,241 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 155 [2018-10-02 12:20:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:30,241 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2018-10-02 12:20:30,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:20:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2018-10-02 12:20:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-02 12:20:30,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:30,242 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 1, 1] [2018-10-02 12:20:30,243 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:30,243 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash 200195655, now seen corresponding path program 33 times [2018-10-02 12:20:30,243 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:30,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:30,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:30,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:31,274 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 [2018-10-02 12:20:31,282 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:31,376 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-02 12:20:31,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:31,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:31,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:31,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:20:31,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:20:31,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:20:31,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:31,715 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 54 states. [2018-10-02 12:20:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:32,024 INFO L93 Difference]: Finished difference Result 164 states and 170 transitions. [2018-10-02 12:20:32,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:20:32,024 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 155 [2018-10-02 12:20:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:32,025 INFO L225 Difference]: With dead ends: 164 [2018-10-02 12:20:32,025 INFO L226 Difference]: Without dead ends: 160 [2018-10-02 12:20:32,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:20:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-10-02 12:20:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-10-02 12:20:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-02 12:20:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-10-02 12:20:32,030 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 155 [2018-10-02 12:20:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:32,030 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-10-02 12:20:32,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:20:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-10-02 12:20:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:20:32,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:32,031 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1] [2018-10-02 12:20:32,032 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:32,032 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:32,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1681224043, now seen corresponding path program 51 times [2018-10-02 12:20:32,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:32,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:32,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:32,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 52 proven. 3978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:32,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:32,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:32,780 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:32,872 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-02 12:20:32,873 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:32,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:34,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:34,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106 [2018-10-02 12:20:34,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-02 12:20:34,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-02 12:20:34,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:34,117 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 107 states. [2018-10-02 12:20:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:39,051 INFO L93 Difference]: Finished difference Result 167 states and 174 transitions. [2018-10-02 12:20:39,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-02 12:20:39,051 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 158 [2018-10-02 12:20:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:39,052 INFO L225 Difference]: With dead ends: 167 [2018-10-02 12:20:39,052 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:20:39,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time 5.1s impTime [2018-10-02 12:20:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:20:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-02 12:20:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-02 12:20:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-02 12:20:39,056 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 158 [2018-10-02 12:20:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:39,057 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-02 12:20:39,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-02 12:20:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-02 12:20:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-02 12:20:39,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:39,058 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1] [2018-10-02 12:20:39,058 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:39,058 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:39,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387319, now seen corresponding path program 52 times [2018-10-02 12:20:39,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:39,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:39,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:40,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:40,152 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 [2018-10-02 12:20:40,161 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:40,207 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:40,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:40,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 53 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:40,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:40,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:20:40,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:20:40,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:20:40,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:40,489 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 55 states. [2018-10-02 12:20:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:41,141 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2018-10-02 12:20:41,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:20:41,141 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 161 [2018-10-02 12:20:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:41,142 INFO L225 Difference]: With dead ends: 168 [2018-10-02 12:20:41,142 INFO L226 Difference]: Without dead ends: 164 [2018-10-02 12:20:41,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:20:41,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-02 12:20:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-10-02 12:20:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-02 12:20:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2018-10-02 12:20:41,145 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 161 [2018-10-02 12:20:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:41,145 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2018-10-02 12:20:41,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:20:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2018-10-02 12:20:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-02 12:20:41,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:41,147 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 1, 1] [2018-10-02 12:20:41,147 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:41,147 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1730387257, now seen corresponding path program 34 times [2018-10-02 12:20:41,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:41,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:41,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:42,333 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 [2018-10-02 12:20:42,340 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:42,388 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:42,388 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:42,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:42,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:42,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:20:42,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:20:42,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:20:42,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:42,674 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 56 states. [2018-10-02 12:20:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:43,158 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2018-10-02 12:20:43,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:20:43,159 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 161 [2018-10-02 12:20:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:43,160 INFO L225 Difference]: With dead ends: 170 [2018-10-02 12:20:43,160 INFO L226 Difference]: Without dead ends: 166 [2018-10-02 12:20:43,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:20:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-02 12:20:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-02 12:20:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-02 12:20:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-02 12:20:43,164 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 161 [2018-10-02 12:20:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:43,165 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-02 12:20:43,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:20:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-02 12:20:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-02 12:20:43,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:43,166 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1] [2018-10-02 12:20:43,166 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:43,166 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:43,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694699, now seen corresponding path program 53 times [2018-10-02 12:20:43,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:43,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:43,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:43,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:43,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:43,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:43,947 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:44,045 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-02 12:20:44,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:44,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 54 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:44,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:44,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:20:44,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:20:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:20:44,325 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:44,325 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 56 states. [2018-10-02 12:20:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:44,665 INFO L93 Difference]: Finished difference Result 171 states and 176 transitions. [2018-10-02 12:20:44,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:20:44,666 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 164 [2018-10-02 12:20:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:44,667 INFO L225 Difference]: With dead ends: 171 [2018-10-02 12:20:44,667 INFO L226 Difference]: Without dead ends: 167 [2018-10-02 12:20:44,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:20:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-02 12:20:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-02 12:20:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-02 12:20:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-02 12:20:44,672 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-02 12:20:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:44,672 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-02 12:20:44,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:20:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-02 12:20:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-02 12:20:44,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:44,673 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 1, 1] [2018-10-02 12:20:44,673 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:44,673 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1769694637, now seen corresponding path program 35 times [2018-10-02 12:20:44,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:44,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:44,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:44,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:44,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:45,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:45,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:45,771 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:45,865 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-02 12:20:45,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:45,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:46,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:46,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:20:46,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:20:46,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:20:46,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:46,471 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 57 states. [2018-10-02 12:20:46,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:46,958 INFO L93 Difference]: Finished difference Result 173 states and 179 transitions. [2018-10-02 12:20:46,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:20:46,958 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 164 [2018-10-02 12:20:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:46,959 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:20:46,959 INFO L226 Difference]: Without dead ends: 169 [2018-10-02 12:20:46,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime [2018-10-02 12:20:46,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-02 12:20:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-02 12:20:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-02 12:20:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-02 12:20:46,963 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 164 [2018-10-02 12:20:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:46,963 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-02 12:20:46,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:20:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-02 12:20:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-02 12:20:46,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:46,964 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1] [2018-10-02 12:20:46,965 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:46,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash -249780471, now seen corresponding path program 54 times [2018-10-02 12:20:46,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:46,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:46,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:46,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:46,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 55 proven. 4455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:47,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:47,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:47,797 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:47,903 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-02 12:20:47,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:47,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:49,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:49,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112 [2018-10-02 12:20:49,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-02 12:20:49,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-02 12:20:49,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:49,279 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 113 states. [2018-10-02 12:20:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,947 INFO L93 Difference]: Finished difference Result 176 states and 183 transitions. [2018-10-02 12:20:54,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-02 12:20:54,947 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 167 [2018-10-02 12:20:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,948 INFO L225 Difference]: With dead ends: 176 [2018-10-02 12:20:54,948 INFO L226 Difference]: Without dead ends: 172 [2018-10-02 12:20:54,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s Time 5.9s impTime [2018-10-02 12:20:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-02 12:20:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2018-10-02 12:20:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-02 12:20:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2018-10-02 12:20:54,951 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 167 [2018-10-02 12:20:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,952 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 174 transitions. [2018-10-02 12:20:54,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-02 12:20:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 174 transitions. [2018-10-02 12:20:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:20:54,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,953 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1] [2018-10-02 12:20:54,953 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751445, now seen corresponding path program 55 times [2018-10-02 12:20:54,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:54,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:55,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 56 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:20:56,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:20:56,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:20:56,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,171 INFO L87 Difference]: Start difference. First operand 172 states and 174 transitions. Second operand 58 states. [2018-10-02 12:20:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:56,679 INFO L93 Difference]: Finished difference Result 177 states and 182 transitions. [2018-10-02 12:20:56,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:20:56,680 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 170 [2018-10-02 12:20:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:56,681 INFO L225 Difference]: With dead ends: 177 [2018-10-02 12:20:56,681 INFO L226 Difference]: Without dead ends: 173 [2018-10-02 12:20:56,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:20:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-02 12:20:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-02 12:20:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-02 12:20:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-02 12:20:56,685 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-02 12:20:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:56,685 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-02 12:20:56,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:20:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-02 12:20:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:20:56,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:56,686 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 1, 1] [2018-10-02 12:20:56,686 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:56,686 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1969751507, now seen corresponding path program 36 times [2018-10-02 12:20:56,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:56,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:56,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:56,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:58,198 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 [2018-10-02 12:20:58,205 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:58,308 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2018-10-02 12:20:58,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:58,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:58,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:20:58,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:20:58,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:20:58,600 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:58,600 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 59 states. [2018-10-02 12:20:58,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:58,836 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2018-10-02 12:20:58,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:20:58,837 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 170 [2018-10-02 12:20:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:58,838 INFO L225 Difference]: With dead ends: 179 [2018-10-02 12:20:58,838 INFO L226 Difference]: Without dead ends: 175 [2018-10-02 12:20:58,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime [2018-10-02 12:20:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-02 12:20:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-02 12:20:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:20:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-02 12:20:58,843 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 170 [2018-10-02 12:20:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:58,843 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-02 12:20:58,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:20:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-02 12:20:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-02 12:20:58,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:58,844 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1] [2018-10-02 12:20:58,844 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:58,844 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:58,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428215, now seen corresponding path program 56 times [2018-10-02 12:20:58,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:58,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:58,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:58,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:00,045 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 [2018-10-02 12:21:00,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:00,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:00,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:00,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 57 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:00,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:21:00,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:21:00,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:21:00,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:00,407 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 59 states. [2018-10-02 12:21:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:00,906 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2018-10-02 12:21:00,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:21:00,907 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 173 [2018-10-02 12:21:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:00,908 INFO L225 Difference]: With dead ends: 180 [2018-10-02 12:21:00,908 INFO L226 Difference]: Without dead ends: 176 [2018-10-02 12:21:00,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:21:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-02 12:21:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-02 12:21:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-02 12:21:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-10-02 12:21:00,912 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 173 [2018-10-02 12:21:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:00,912 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-10-02 12:21:00,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:21:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-10-02 12:21:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-02 12:21:00,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:00,913 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 1, 1] [2018-10-02 12:21:00,914 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:00,914 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1271428153, now seen corresponding path program 37 times [2018-10-02 12:21:00,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:00,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:00,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:00,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:02,427 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 [2018-10-02 12:21:02,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:02,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:21:02,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:21:02,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:21:02,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:02,806 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 60 states. [2018-10-02 12:21:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:03,326 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2018-10-02 12:21:03,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:21:03,327 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 173 [2018-10-02 12:21:03,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:03,328 INFO L225 Difference]: With dead ends: 182 [2018-10-02 12:21:03,328 INFO L226 Difference]: Without dead ends: 178 [2018-10-02 12:21:03,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:21:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-02 12:21:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-02 12:21:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-02 12:21:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2018-10-02 12:21:03,334 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 173 [2018-10-02 12:21:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:03,334 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2018-10-02 12:21:03,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:21:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2018-10-02 12:21:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-02 12:21:03,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:03,335 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1] [2018-10-02 12:21:03,336 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:03,336 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash 200069397, now seen corresponding path program 57 times [2018-10-02 12:21:03,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:03,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 58 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:04,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:04,662 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:04,774 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-02 12:21:04,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:04,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5017 backedges. 0 proven. 5017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:07,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118 [2018-10-02 12:21:07,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-02 12:21:07,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-02 12:21:07,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:07,406 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 119 states. [2018-10-02 12:21:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:12,899 INFO L93 Difference]: Finished difference Result 185 states and 192 transitions. [2018-10-02 12:21:12,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-02 12:21:12,900 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 176 [2018-10-02 12:21:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:12,900 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:21:12,900 INFO L226 Difference]: Without dead ends: 181 [2018-10-02 12:21:12,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9s Time 7.3s impTime [2018-10-02 12:21:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-02 12:21:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-02 12:21:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-02 12:21:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-02 12:21:12,905 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 176 [2018-10-02 12:21:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:12,905 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-02 12:21:12,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-02 12:21:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-02 12:21:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-02 12:21:12,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:12,906 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1] [2018-10-02 12:21:12,907 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:12,907 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761783, now seen corresponding path program 58 times [2018-10-02 12:21:12,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:12,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:13,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:13,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:13,974 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:14,026 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:14,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:14,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 59 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:14,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:14,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:21:14,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:21:14,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:21:14,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:14,329 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 61 states. [2018-10-02 12:21:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:14,706 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2018-10-02 12:21:14,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:21:14,707 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 179 [2018-10-02 12:21:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:14,708 INFO L225 Difference]: With dead ends: 186 [2018-10-02 12:21:14,708 INFO L226 Difference]: Without dead ends: 182 [2018-10-02 12:21:14,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:21:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-10-02 12:21:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-10-02 12:21:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-02 12:21:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 184 transitions. [2018-10-02 12:21:14,713 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 184 transitions. Word has length 179 [2018-10-02 12:21:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:14,713 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 184 transitions. [2018-10-02 12:21:14,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:21:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 184 transitions. [2018-10-02 12:21:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-02 12:21:14,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:14,714 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 1, 1] [2018-10-02 12:21:14,714 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:14,714 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1145761721, now seen corresponding path program 38 times [2018-10-02 12:21:14,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:14,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:14,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:14,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:15,436 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 [2018-10-02 12:21:15,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:15,495 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:15,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:15,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 5192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:15,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:21:15,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:21:15,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:21:15,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:15,805 INFO L87 Difference]: Start difference. First operand 182 states and 184 transitions. Second operand 62 states. [2018-10-02 12:21:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:16,201 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2018-10-02 12:21:16,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:21:16,202 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 179 [2018-10-02 12:21:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:16,203 INFO L225 Difference]: With dead ends: 188 [2018-10-02 12:21:16,203 INFO L226 Difference]: Without dead ends: 184 [2018-10-02 12:21:16,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:21:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-02 12:21:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-02 12:21:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-02 12:21:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 186 transitions. [2018-10-02 12:21:16,208 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 186 transitions. Word has length 179 [2018-10-02 12:21:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:16,208 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 186 transitions. [2018-10-02 12:21:16,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:21:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 186 transitions. [2018-10-02 12:21:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:21:16,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:16,209 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1] [2018-10-02 12:21:16,209 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:16,209 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1282737003, now seen corresponding path program 59 times [2018-10-02 12:21:16,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:16,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:16,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:16,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:16,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:17,096 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-02 12:21:17,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:17,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 60 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:17,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:17,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:21:17,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:21:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:21:17,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:17,406 INFO L87 Difference]: Start difference. First operand 184 states and 186 transitions. Second operand 62 states. [2018-10-02 12:21:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:17,679 INFO L93 Difference]: Finished difference Result 189 states and 194 transitions. [2018-10-02 12:21:17,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:21:17,680 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 182 [2018-10-02 12:21:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:17,681 INFO L225 Difference]: With dead ends: 189 [2018-10-02 12:21:17,681 INFO L226 Difference]: Without dead ends: 185 [2018-10-02 12:21:17,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:21:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-02 12:21:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-02 12:21:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-02 12:21:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-02 12:21:17,685 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-02 12:21:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:17,685 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-02 12:21:17,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:21:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-02 12:21:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:21:17,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:17,686 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 1, 1] [2018-10-02 12:21:17,686 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:17,686 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:17,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1282736941, now seen corresponding path program 39 times [2018-10-02 12:21:17,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:17,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:17,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:17,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:18,532 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 [2018-10-02 12:21:18,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:18,654 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2018-10-02 12:21:18,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:18,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 5370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:18,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:21:18,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:21:18,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:21:18,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:18,965 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 63 states. [2018-10-02 12:21:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:19,373 INFO L93 Difference]: Finished difference Result 191 states and 197 transitions. [2018-10-02 12:21:19,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:21:19,374 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 182 [2018-10-02 12:21:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:19,375 INFO L225 Difference]: With dead ends: 191 [2018-10-02 12:21:19,375 INFO L226 Difference]: Without dead ends: 187 [2018-10-02 12:21:19,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:21:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-02 12:21:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-02 12:21:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-02 12:21:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-02 12:21:19,380 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 182 [2018-10-02 12:21:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:19,380 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-02 12:21:19,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:21:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-02 12:21:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-02 12:21:19,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:19,381 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1] [2018-10-02 12:21:19,382 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:19,382 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1692584823, now seen corresponding path program 60 times [2018-10-02 12:21:19,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:19,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:19,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:19,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 61 proven. 5490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:20,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:20,067 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 [2018-10-02 12:21:20,076 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:20,187 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-02 12:21:20,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:20,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 5551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:21,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124 [2018-10-02 12:21:21,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-02 12:21:21,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-02 12:21:21,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:21,457 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 125 states. [2018-10-02 12:21:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:27,205 INFO L93 Difference]: Finished difference Result 194 states and 201 transitions. [2018-10-02 12:21:27,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-02 12:21:27,205 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 185 [2018-10-02 12:21:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:27,206 INFO L225 Difference]: With dead ends: 194 [2018-10-02 12:21:27,206 INFO L226 Difference]: Without dead ends: 190 [2018-10-02 12:21:27,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s Time 5.4s impTime [2018-10-02 12:21:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-10-02 12:21:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-10-02 12:21:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-02 12:21:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-10-02 12:21:27,210 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 185 [2018-10-02 12:21:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:27,210 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-10-02 12:21:27,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-02 12:21:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-10-02 12:21:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:21:27,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:27,211 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1] [2018-10-02 12:21:27,211 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:27,211 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -876967915, now seen corresponding path program 61 times [2018-10-02 12:21:27,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:27,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:27,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:27,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:27,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:27,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:27,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:28,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 62 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:28,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:21:28,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:21:28,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:21:28,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:28,375 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 64 states. [2018-10-02 12:21:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:28,750 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2018-10-02 12:21:28,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:21:28,750 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 188 [2018-10-02 12:21:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:28,751 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:21:28,752 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:21:28,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:21:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:21:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:21:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:21:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-02 12:21:28,757 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-02 12:21:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:28,757 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-02 12:21:28,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:21:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-02 12:21:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:21:28,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:28,759 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 1, 1] [2018-10-02 12:21:28,759 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:28,759 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:28,759 INFO L82 PathProgramCache]: Analyzing trace with hash -876967853, now seen corresponding path program 40 times [2018-10-02 12:21:28,759 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:28,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:28,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:28,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:28,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:29,404 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 [2018-10-02 12:21:29,412 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:29,464 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:29,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:29,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:29,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:21:29,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:21:29,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:21:29,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:29,784 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 65 states. [2018-10-02 12:21:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:30,095 INFO L93 Difference]: Finished difference Result 197 states and 203 transitions. [2018-10-02 12:21:30,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:21:30,095 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 188 [2018-10-02 12:21:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:30,096 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:21:30,096 INFO L226 Difference]: Without dead ends: 193 [2018-10-02 12:21:30,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:21:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-02 12:21:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-02 12:21:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-02 12:21:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-02 12:21:30,101 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 188 [2018-10-02 12:21:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:30,101 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-02 12:21:30,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:21:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-02 12:21:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-02 12:21:30,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:30,102 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1] [2018-10-02 12:21:30,102 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:30,102 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash 536344841, now seen corresponding path program 62 times [2018-10-02 12:21:30,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:30,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:30,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:30,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:30,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:30,976 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 [2018-10-02 12:21:30,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:31,037 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:31,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:31,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 63 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:31,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:21:31,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:21:31,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:21:31,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:31,434 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 65 states. [2018-10-02 12:21:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:31,720 INFO L93 Difference]: Finished difference Result 198 states and 203 transitions. [2018-10-02 12:21:31,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:21:31,720 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 191 [2018-10-02 12:21:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:31,721 INFO L225 Difference]: With dead ends: 198 [2018-10-02 12:21:31,721 INFO L226 Difference]: Without dead ends: 194 [2018-10-02 12:21:31,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime [2018-10-02 12:21:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-02 12:21:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-10-02 12:21:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-02 12:21:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 196 transitions. [2018-10-02 12:21:31,725 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 196 transitions. Word has length 191 [2018-10-02 12:21:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:31,726 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 196 transitions. [2018-10-02 12:21:31,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:21:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 196 transitions. [2018-10-02 12:21:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-02 12:21:31,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:31,726 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1] [2018-10-02 12:21:31,727 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:31,727 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash 536344903, now seen corresponding path program 41 times [2018-10-02 12:21:31,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:31,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:31,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:32,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:32,865 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 [2018-10-02 12:21:32,872 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:32,987 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-02 12:21:32,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:32,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:33,333 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:33,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:21:33,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:21:33,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:21:33,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:33,334 INFO L87 Difference]: Start difference. First operand 194 states and 196 transitions. Second operand 66 states. [2018-10-02 12:21:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:33,623 INFO L93 Difference]: Finished difference Result 200 states and 206 transitions. [2018-10-02 12:21:33,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:21:33,624 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 191 [2018-10-02 12:21:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:33,624 INFO L225 Difference]: With dead ends: 200 [2018-10-02 12:21:33,625 INFO L226 Difference]: Without dead ends: 196 [2018-10-02 12:21:33,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:21:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-02 12:21:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-02 12:21:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-02 12:21:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-10-02 12:21:33,630 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 191 [2018-10-02 12:21:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:33,631 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-10-02 12:21:33,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:21:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-10-02 12:21:33,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-02 12:21:33,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:33,632 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1] [2018-10-02 12:21:33,632 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:33,632 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash 972256149, now seen corresponding path program 63 times [2018-10-02 12:21:33,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:33,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:33,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:33,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 64 proven. 6048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:34,340 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 [2018-10-02 12:21:34,347 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:34,472 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-02 12:21:34,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:34,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6112 backedges. 0 proven. 6112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:35,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:35,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130 [2018-10-02 12:21:35,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-02 12:21:35,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-02 12:21:35,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:35,842 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 131 states. [2018-10-02 12:21:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:41,644 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2018-10-02 12:21:41,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-02 12:21:41,644 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 194 [2018-10-02 12:21:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:41,645 INFO L225 Difference]: With dead ends: 203 [2018-10-02 12:21:41,645 INFO L226 Difference]: Without dead ends: 199 [2018-10-02 12:21:41,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s Time 5.8s impTime [2018-10-02 12:21:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-02 12:21:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-02 12:21:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-02 12:21:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-02 12:21:41,648 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 194 [2018-10-02 12:21:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:41,648 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-02 12:21:41,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-02 12:21:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-02 12:21:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-02 12:21:41,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:41,649 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1] [2018-10-02 12:21:41,649 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:41,649 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -775070327, now seen corresponding path program 64 times [2018-10-02 12:21:41,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:41,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:41,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:41,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:41,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:42,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:42,933 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:42,946 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:43,000 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:43,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:43,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 65 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:43,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:21:43,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:21:43,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:21:43,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:43,439 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 67 states. [2018-10-02 12:21:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:43,881 INFO L93 Difference]: Finished difference Result 204 states and 209 transitions. [2018-10-02 12:21:43,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:21:43,882 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 197 [2018-10-02 12:21:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:43,883 INFO L225 Difference]: With dead ends: 204 [2018-10-02 12:21:43,883 INFO L226 Difference]: Without dead ends: 200 [2018-10-02 12:21:43,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:21:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-10-02 12:21:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-10-02 12:21:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-02 12:21:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-10-02 12:21:43,890 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 197 [2018-10-02 12:21:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:43,890 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-10-02 12:21:43,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:21:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-10-02 12:21:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-02 12:21:43,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:43,891 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 1, 1] [2018-10-02 12:21:43,891 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:43,891 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:43,891 INFO L82 PathProgramCache]: Analyzing trace with hash -775070265, now seen corresponding path program 42 times [2018-10-02 12:21:43,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:43,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:44,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:44,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:44,603 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:44,725 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2018-10-02 12:21:44,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:44,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6305 backedges. 0 proven. 6305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:45,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:45,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:21:45,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:21:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:21:45,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:45,076 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 68 states. [2018-10-02 12:21:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:45,418 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2018-10-02 12:21:45,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:21:45,419 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 197 [2018-10-02 12:21:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:45,420 INFO L225 Difference]: With dead ends: 206 [2018-10-02 12:21:45,420 INFO L226 Difference]: Without dead ends: 202 [2018-10-02 12:21:45,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:21:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-10-02 12:21:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2018-10-02 12:21:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-02 12:21:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2018-10-02 12:21:45,424 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 197 [2018-10-02 12:21:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:45,425 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2018-10-02 12:21:45,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:21:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2018-10-02 12:21:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-02 12:21:45,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:45,425 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1] [2018-10-02 12:21:45,426 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:45,426 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash -374489323, now seen corresponding path program 65 times [2018-10-02 12:21:45,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:45,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:45,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:45,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:46,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:46,468 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 [2018-10-02 12:21:46,475 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:46,617 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-02 12:21:46,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:46,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 66 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:46,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:46,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:21:46,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:21:46,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:21:46,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:46,969 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 68 states. [2018-10-02 12:21:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:47,507 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2018-10-02 12:21:47,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:21:47,507 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 200 [2018-10-02 12:21:47,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:47,508 INFO L225 Difference]: With dead ends: 207 [2018-10-02 12:21:47,508 INFO L226 Difference]: Without dead ends: 203 [2018-10-02 12:21:47,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:21:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-02 12:21:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-02 12:21:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-02 12:21:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-02 12:21:47,511 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-02 12:21:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:47,511 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-02 12:21:47,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:21:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-02 12:21:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-02 12:21:47,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:47,512 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 1, 1] [2018-10-02 12:21:47,512 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:47,513 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -374489261, now seen corresponding path program 43 times [2018-10-02 12:21:47,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:47,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:47,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:47,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:48,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:48,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:48,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:48,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6501 backedges. 0 proven. 6501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:48,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:48,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:21:48,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:21:48,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:21:48,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:48,725 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 69 states. [2018-10-02 12:21:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:49,059 INFO L93 Difference]: Finished difference Result 209 states and 215 transitions. [2018-10-02 12:21:49,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:21:49,060 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 200 [2018-10-02 12:21:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:49,060 INFO L225 Difference]: With dead ends: 209 [2018-10-02 12:21:49,061 INFO L226 Difference]: Without dead ends: 205 [2018-10-02 12:21:49,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:21:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-02 12:21:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-02 12:21:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-02 12:21:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-02 12:21:49,066 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 200 [2018-10-02 12:21:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:49,066 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-02 12:21:49,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:21:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-02 12:21:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-02 12:21:49,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:49,067 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1] [2018-10-02 12:21:49,068 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:49,068 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1915052553, now seen corresponding path program 66 times [2018-10-02 12:21:49,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:49,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 67 proven. 6633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:50,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:50,066 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 [2018-10-02 12:21:50,075 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:50,209 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-02 12:21:50,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:50,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6700 backedges. 0 proven. 6700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:52,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:52,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136 [2018-10-02 12:21:52,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-02 12:21:52,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-02 12:21:52,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:52,251 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 137 states. [2018-10-02 12:21:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:58,540 INFO L93 Difference]: Finished difference Result 212 states and 219 transitions. [2018-10-02 12:21:58,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-02 12:21:58,540 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 203 [2018-10-02 12:21:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:58,541 INFO L225 Difference]: With dead ends: 212 [2018-10-02 12:21:58,541 INFO L226 Difference]: Without dead ends: 208 [2018-10-02 12:21:58,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6s Time 6.9s impTime [2018-10-02 12:21:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-02 12:21:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2018-10-02 12:21:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-02 12:21:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2018-10-02 12:21:58,545 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 203 [2018-10-02 12:21:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:58,546 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2018-10-02 12:21:58,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-02 12:21:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2018-10-02 12:21:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-02 12:21:58,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:58,547 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1] [2018-10-02 12:21:58,547 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:58,547 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:58,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452693, now seen corresponding path program 67 times [2018-10-02 12:21:58,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:58,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:58,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:58,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:58,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:59,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:59,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:59,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:59,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 68 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:59,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:59,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:21:59,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:21:59,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:21:59,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:59,967 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 70 states. [2018-10-02 12:22:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:00,289 INFO L93 Difference]: Finished difference Result 213 states and 218 transitions. [2018-10-02 12:22:00,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:22:00,289 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 206 [2018-10-02 12:22:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:00,290 INFO L225 Difference]: With dead ends: 213 [2018-10-02 12:22:00,290 INFO L226 Difference]: Without dead ends: 209 [2018-10-02 12:22:00,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:22:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-02 12:22:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-02 12:22:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-02 12:22:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-02 12:22:00,295 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-02 12:22:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:00,296 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-02 12:22:00,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:22:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-02 12:22:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-02 12:22:00,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:00,297 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 1, 1] [2018-10-02 12:22:00,297 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:00,297 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:00,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1281452755, now seen corresponding path program 44 times [2018-10-02 12:22:00,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:00,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:00,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:00,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:00,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:01,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:01,443 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 [2018-10-02 12:22:01,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:01,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:01,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:01,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 0 proven. 6902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:01,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:01,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:22:01,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:22:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:22:01,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:01,867 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 71 states. [2018-10-02 12:22:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:02,378 INFO L93 Difference]: Finished difference Result 215 states and 221 transitions. [2018-10-02 12:22:02,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:22:02,379 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 206 [2018-10-02 12:22:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:02,379 INFO L225 Difference]: With dead ends: 215 [2018-10-02 12:22:02,380 INFO L226 Difference]: Without dead ends: 211 [2018-10-02 12:22:02,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime [2018-10-02 12:22:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-02 12:22:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-02 12:22:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-02 12:22:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-02 12:22:02,383 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 206 [2018-10-02 12:22:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:02,383 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-02 12:22:02,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:22:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-02 12:22:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-02 12:22:02,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:02,384 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1] [2018-10-02 12:22:02,385 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:02,385 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289353, now seen corresponding path program 68 times [2018-10-02 12:22:02,385 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:02,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:02,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:02,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:02,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:03,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:03,651 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 [2018-10-02 12:22:03,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:03,735 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:03,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:03,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 69 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:04,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:04,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:22:04,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:22:04,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:22:04,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:04,163 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 71 states. [2018-10-02 12:22:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:04,649 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2018-10-02 12:22:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:22:04,650 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 209 [2018-10-02 12:22:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:04,651 INFO L225 Difference]: With dead ends: 216 [2018-10-02 12:22:04,651 INFO L226 Difference]: Without dead ends: 212 [2018-10-02 12:22:04,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:22:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-10-02 12:22:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2018-10-02 12:22:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-02 12:22:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 214 transitions. [2018-10-02 12:22:04,655 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 214 transitions. Word has length 209 [2018-10-02 12:22:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:04,655 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 214 transitions. [2018-10-02 12:22:04,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:22:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 214 transitions. [2018-10-02 12:22:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-02 12:22:04,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:04,656 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 1, 1] [2018-10-02 12:22:04,656 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:04,656 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2089289415, now seen corresponding path program 45 times [2018-10-02 12:22:04,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:04,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:04,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:04,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:05,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:05,748 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:22:05,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:05,896 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-02 12:22:05,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:05,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7107 backedges. 0 proven. 7107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:06,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:06,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:22:06,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:22:06,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:22:06,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:06,256 INFO L87 Difference]: Start difference. First operand 212 states and 214 transitions. Second operand 72 states. [2018-10-02 12:22:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:06,783 INFO L93 Difference]: Finished difference Result 218 states and 224 transitions. [2018-10-02 12:22:06,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:22:06,783 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 209 [2018-10-02 12:22:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:06,784 INFO L225 Difference]: With dead ends: 218 [2018-10-02 12:22:06,784 INFO L226 Difference]: Without dead ends: 214 [2018-10-02 12:22:06,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:22:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-02 12:22:06,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2018-10-02 12:22:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-02 12:22:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 216 transitions. [2018-10-02 12:22:06,788 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 216 transitions. Word has length 209 [2018-10-02 12:22:06,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:06,789 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 216 transitions. [2018-10-02 12:22:06,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:22:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 216 transitions. [2018-10-02 12:22:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-02 12:22:06,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:06,789 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1] [2018-10-02 12:22:06,790 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:06,790 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash -645499371, now seen corresponding path program 69 times [2018-10-02 12:22:06,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:06,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:06,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:06,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:06,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7315 backedges. 70 proven. 7245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:08,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:08,211 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 [2018-10-02 12:22:08,219 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:08,365 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-02 12:22:08,365 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:08,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-02 12:22:08,863 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-02 12:22:09,064 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:22:09,064 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:22:09,071 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:22:09,071 INFO L202 PluginConnector]: Adding new model HiddenEqualityWithBranches.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:22:09 BoogieIcfgContainer [2018-10-02 12:22:09,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:22:09,072 INFO L168 Benchmark]: Toolchain (without parser) took 235152.29 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -199.2 MB). Free memory was 1.5 GB in the beginning and 934.9 MB in the end (delta: 521.8 MB). Peak memory consumption was 322.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:22:09,073 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-02 12:22:09,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.28 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. [2018-10-02 12:22:09,074 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 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. [2018-10-02 12:22:09,075 INFO L168 Benchmark]: RCFGBuilder took 305.20 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. [2018-10-02 12:22:09,075 INFO L168 Benchmark]: TraceAbstraction took 234774.50 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -199.2 MB). Free memory was 1.4 GB in the beginning and 934.9 MB in the end (delta: 500.7 MB). Peak memory consumption was 301.4 MB. Max. memory is 7.1 GB. [2018-10-02 12:22:09,078 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.28 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 24.76 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 305.20 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 234774.50 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -199.2 MB). Free memory was 1.4 GB in the beginning and 934.9 MB in the end (delta: 500.7 MB). Peak memory consumption was 301.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 30). Cancelled while BasicCegarLoop was analyzing trace of length 213 with TraceHistMax 70, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 234.7s OverallTime, 116 OverallIterations, 70 TraceHistogramMax, 97.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 667 SDtfs, 2487 SDslu, 10947 SDs, 0 SdLazy, 12229 SolverSat, 1124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17913 GetRequests, 11381 SyntacticMatches, 0 SemanticMatches, 6532 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 115 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 120.9s InterpolantComputationTime, 24537 NumberOfCodeBlocks, 24537 NumberOfCodeBlocksAsserted, 2247 NumberOfCheckSat, 24309 ConstructedInterpolants, 0 QuantifiedInterpolants, 10237847 SizeOfPredicates, 0 NumberOfNonLiveVariables, 29108 ConjunctsInSsa, 4195 ConjunctsInUnsatCore, 228 InterpolantComputations, 2 PerfectInterpolantSequences, 4013/558041 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-22-09-091.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenEqualityWithBranches.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-22-09-091.csv Completed graceful shutdown